(suffer) in a warmer world are in danger. Studies show that the polar ice

　　4

　　(reduce) by 9.8% every 10 years since 1978.At present , about 20,000 to 25,000 polar bears live in the Arctic. Polar bears depend on the sea ice for their

　　5 (survive). “The sea ice is more than just the platform that the bears walk

　　6

　　,” says Andrew Derocher, who studies North American polar bear populations. “Without

　　7

　　, they can’t exist.”

　　Some melting and refreezing of the polar ice is natural. But in a

　　8

　　(warm) world, these cycles speed up, and bears have less time to hunt.

　　9

　　(normal), they have three months in the spring when they gain more weight and the extra fat is used later,

　　10

　　the bears are not actively hunting. Therefore, it is urgent to protect the environment and maintain the ecological balance.

　　II阅读 (共两节，满分30分)

　　第一节 阅读理解 (共1小题；每小题2分，满分20分)

　　阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

　　A

　　It is one of the most annoying words in the English language and it seems there is no escaping it. The word “huh?” is in worldwide use, a study found.

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