2. 外语
  3. Choose the correct letter, A, B, C or D. Write the correct letter in boxes 22-26 on your answer sheet. What factor drives Antar

Choose the correct letter, A, B, C or D. Write the correct letter in boxes 22-26 on your answer sheet. What factor drives Antar

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问题 Choose the correct letter, A, B, C or D.
Write the correct letter in boxes 22-26 on your answer sheet.
What factor drives Antarctic water to move beyond the continental shelf?
选项 A、The increase of salt and density of the water
B、The decrease of salt and density of the water
C、The rising temperature due to global warming
D、The melting of fresh ice into the ocean
答案A
解析 根据关键词“continental shelf”定位到原文F段“Since only flesh water freezes intoice，the water that remains becomes increasingly salty and dense，sinking until it spills overthe continental shelf”，随着淡水结成冰，那些剩余的海水盐分浓度越来越高，密度越来越大，因此才“spills over the continental shelf”，对应题目中的“move beyond thecontinental shelf”，所以正确答案是A。
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