2. 外语
  3. Polar bears are suffering in a【C1】________(warm)world than ever before. Polar bears live in environments too cold for most a

Polar bears are suffering in a【C1】________(warm)world than ever before. Polar bears live in environments too cold for most a

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问题     Polar bears are suffering in a【C1】________(warm)world than ever before.
    Polar bears live in environments too cold for most animals. During much of the year. 【C2】________live and hunt on the frozen Arctic sea ice. Nature has prepared them for the cold conditions. But nothing has prepared the bears for the danger threatening the only home they know.
    The polar bears ’ world is【C3】m________.  Studies show that the   polar ice【C4】________(reduce) by 9. 8% every 10 years since 1978. Now about 20,000 to 25,000 polar bears live in the Arctic. Polar bears 【C5】d________on the sea ice for their survival.
    "The sea ice is more than just this platform that the bears walk over. " says Andrew Durocher, a scientist【C6】________ studies North  American  polar  bear  populations." 【C7】________it, they can’ t exist. "
    Some melting and refreezing of the polar ice is natural. 【C8】________, in a warmer world, these cycles speed up, and bears have less time 【C9】________(hunt). Normally. they have three months in the spring when they gain more weight. The extra fat is used later, 【C10】________the bears are not actively hunting.
【C9】
选项
答案to hunt
解析 本题考查固定搭配have time to do sth．，故答案是to hunt。
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本试题收录于： D类竞赛（专科）题库大学生英语竞赛（NECCS）分类
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