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		<h1>THIÊN NHIÊN CHỊU ẢNH HƯỞNG SÂU SẮC CỦA BIỂN</h1>
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			<li>Chủ nhật - 27/06/2021 05:17</li>
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			A. KIẾN THỨC CƠ BẢN<br />1. Đặc điểm của Biển Đông
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			<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Biển Đông là biển lớn của thế giới (diện tích gần 3,5 triệu km<sup>2</sup>, trong đó phần thuộc lãnh thổ nước ta hơn 1 triệu km<sup>2</sup>).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Biển Đông là biển nóng và chịu ảnh hưởng của gió mùa (nhiệt độ của nước biển cao, thành phần sinh vật nhiệt đới chiếm ưu thế tuyệt đối, mùa đông phần biển phía bắc vĩ tuyến 16ºB giảm nhiệt độ nhiều).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Biển Đông là biển tương đối kín (các dòng hải lưu khép kín, hệ thống đảo và quần đảo bao bọc phía ngoài).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>2. Ảnh hưởng của Biển Đông đến thiên nhiên Việt Nam</b></span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i>a) Biển Đông làm cho nước ta có khí hậu hải dương điều hoà</i></b></span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Độ ẩm của không khí lớn (trên 80%).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Gió biển làm giảm độ lục địa ở các vùng cực tây của đất nước.</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Lượng mưa lớn (1500 – 3000 mm/năm) làm giảm tính khắc nghiệt của khí hậu, mùa đông bớt lạnh khô, mùa hè bớt nóng bức.</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i>b) Địa hình ven biển đặc sắc, đa dạng</i></b></span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Hoạt động xâm thực bồi tụ diễn ra mạnh.</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Ven biển có nhiều dạng địa hình : Cửa sông, cồn cát, vũng vịnh, đảo ven bờ, rạn san hô, tam giác châu thổ…</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i>c) Cảnh quan rừng chiếm ưu thế</i></b></span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Lượng mưa dồi dào nên rừng phát triển nhanh, chiếm diện tích lớn, xanh quanh năm.</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Diện tích rừng ngập mặn ven biển lớn (450 000 ha, đứng thứ hai thế giới).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i>d) Nguồn lợi biển phong phú</i></b></span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Có nhiều loại khoáng sản đặc biệt là dầu khí (trữ lượng hàng chục tỉ tấn).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Có khả năng phát triển nghề làm muối quanh năm (sản lượng muối 800 000 tấn/năm).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">- Sinh vật biển dồi dào (2 000 loài cá, 70 loài tôm, trên 1 500 loài giáp xác, 2500 loài nhuyễn thể, 650 loài rong biển, trữ lượng hải sản 4 triệu tấn/năm).</span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i>e) Thiên tai</i></b></span></span><br  />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Biển Đông tiềm ẩn nhiều thiên tai (bão, sóng thần, vòi rồng...).</span></span><br  />
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<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>B. CÂU HỎI TRẮC NGHIỆM</b></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 1.</b>&nbsp;&nbsp; Loại khoáng sản có tiềm năng vô tận ở Biển Đông nước ta là :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Dầu khí.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Muối biển.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Cát trắng.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Titan.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 2.</b>&nbsp;&nbsp; Khu vực có thềm lục địa bị thu hẹp trên Biển Đông thuộc vùng :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Vịnh Bắc Bộ.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Vịnh Thái Lan.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Bắc Trung Bộ.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Nam Trung Bộ</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 3.</b>&nbsp;&nbsp; Ở nước ta thời tiết mùa đông bớt lạnh khô, mùa hè bớt nóng bức là nhờ :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Nằm gần Xích đạo, mưa nhiều.&nbsp; B. Địa hình 85% là đồi núi thấp.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Chịu tác động thường xuyên của gió mùa.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Tiếp giáp với Biển Đông (trên 3260 km bờ biển).</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 4.</b>&nbsp;&nbsp; Quá trình chủ yếu chi phối địa mạo của vùng ven biển của nước ta là :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Xâm thực.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Mài mòn.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Bồi tụ.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Xâm thực - bồi tụ.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 5.</b>&nbsp;&nbsp; Biểu hiện rõ nhất đặc điểm nóng ẩm của Biển Đông là :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Thành phần sinh vật nhiệt đới chiếm ưu thế.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Nhiệt độ nước biển khá cao và thay đổi theo mùa.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Có các dòng hải lưu nóng hoạt động suốt năm.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Có các luồng gió theo hướng đông nam thổi vào nước ta gây mưa.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 6.</b>&nbsp;&nbsp; Điểm cuối cùng của đường hải giới nước ta về phía nam là :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Móng Cái.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Hà Tiên.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Rạch Giá.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Cà Mau.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 7.</b>&nbsp;&nbsp; Hạn chế lớn nhất của Biển Đông là :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Tài nguyên sinh vật biển đang bị suy giảm nghiêm trọng.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Thường xuyên hình thành các cơn bão nhiệt đới.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Hiện tượng sóng thần do hoạt động của động đất núi lửa.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Tác động của các cơn bão nhiệt đới và gió mùa đông bắc.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 8.</b>&nbsp;&nbsp; Vân Phong và Cam Ranh là hai vịnh biển thuộc tỉnh (thành) :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Quảng Ninh.&nbsp;&nbsp; B. Đà Nẵng.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Khánh Hoà.&nbsp;&nbsp;&nbsp; D. Bình Thuận.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 9.</b>&nbsp;&nbsp; Ở nước ta, nghề làm muối phát triển mạnh tại :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Của Lò (Nghệ An).&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Thuận An (Thừa Thiên - Huế).</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Sa Huỳnh (Quảng Ngãi).&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Mũi Né (Bình Thuận).</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 10.</b> <span style="letter-spacing:-.1pt">Khu vực có điều kiện thuận lợi nhất để xây dựng cảng biển của nước ta là :</span></span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Vịnh Bắc Bộ.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Vịnh Thái Lan.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Bắc Trung Bộ.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Duyên hải Nam Trung Bộ.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 11.</b> Hai bể trầm tích có diện tích lớn nhất nước ta là :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Sông Hồng và Trung Bộ.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Cửu Long và Sông Hồng.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Nam Côn Sơn và Cửu Long.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Nam Côn Sơn và Thổ Chu - Mã Lai.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 12.</b> Đặc điểm của Biển Đông có ảnh hưởng nhiều nhất đến thiên nhiên nước ta là :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Nóng, ẩm và chịu ảnh hưởng của gió mùa.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Có diện tích lớn gần 3,5 triệu km².</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Biển kín với các hải lưu chạy khép kín.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Có thềm lục địa mở rộng hai đầu thu hẹp ở giữa.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 13.</b> Tính chất nhiệt đới ẩm gió mùa của Biển Đông được thể hiện rõ ở :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Nhiệt độ nước biển.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Dòng hải lưu.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Thành phần loài sinh vầt biển.&nbsp;&nbsp;&nbsp; D. Cả ba ý trên.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 14.</b> Vùng cực Nam Trung Bộ là nơi có nghề làm muối rất lí tưởng vì :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Không có bão lại ít chịu ảnh hưởng của gió mùa đông bắc.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B.&nbsp; Có nhiệt độ cao, nhiều nắng, chỉ có vài sông nhỏ đổ ra biển.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Có những hệ núi cao ăn lan ra tận biển nên bờ biển khúc khuỷu.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Có thềm lục địa thoai thoải kéo dài sang tận Ma-lai-xi-a.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>Câu 15.</b> Biển Đông ảnh hưởng nhiều nhất, sâu sắc nhất đến thiên nhiên nước ta ở lĩnh vực :</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Sinh vật.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. Địa hình.</span></span></span><br  />
<span style="font-size:12pt"><span style="tab-stops:127.6pt 212.65pt 297.7pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. Khí hậu.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Cảnh quan ven biển.</span></span></span><br  />
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<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b>C. ĐÁP ÁN </b></span></span>
<table class="Table" style="margin-left:64px; border-collapse:collapse; border:none">
	<tbody>
		<tr style="height:14.45pt">
			<td style="border:solid windowtext 1.0pt; width:53.4pt; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">1.B </span></span></td>
			<td style="border:solid windowtext 1.0pt; width:53.4pt; border-left:none; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">2. D</span></span></td>
			<td style="border:solid windowtext 1.0pt; width:53.4pt; border-left:none; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">3. D</span></span></td>
			<td style="border:solid windowtext 1.0pt; width:53.45pt; border-left:none; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">4. D</span></span></td>
			<td style="border:solid windowtext 1.0pt; width:53.45pt; border-left:none; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">5. A</span></span></td>
			<td style="border:solid windowtext 1.0pt; width:53.45pt; border-left:none; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">6. B</span></span></td>
		</tr>
		<tr style="height:14.45pt">
			<td style="border:solid windowtext 1.0pt; width:53.4pt; border-top:none; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">7. D</span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:53.4pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">8. C</span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:53.4pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">9. C</span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:53.45pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">10. D</span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:53.45pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">11. C&nbsp;&nbsp;&nbsp; </span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:53.45pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:14.45pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">12. A&nbsp;&nbsp;&nbsp;&nbsp; </span></span></td>
		</tr>
		<tr style="height:15.05pt">
			<td style="border:solid windowtext 1.0pt; width:53.4pt; border-top:none; padding:0cm 5.4pt 0cm 5.4pt; height:15.05pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">13. D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:53.4pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:15.05pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">14. B&nbsp;&nbsp;&nbsp; </span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:53.4pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:15.05pt" valign="top" width="71"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">15. C</span></span></td>
			<td style="border:none; width:53.45pt; padding:0cm 5.4pt 0cm 5.4pt; height:15.05pt" valign="top" width="71">&nbsp;</td>
			<td style="border:none; width:53.45pt; padding:0cm 5.4pt 0cm 5.4pt; height:15.05pt" valign="top" width="71">&nbsp;</td>
			<td style="border:none; width:53.45pt; padding:0cm 5.4pt 0cm 5.4pt; height:15.05pt" valign="top" width="71">&nbsp;</td>
		</tr>
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