A．To help them stay warm.

　　B．To get away from their enemies.

　　C．To keep them healthier.

　　D．To protect their blood vessels.

　　答案　A

　　解析　细节理解题。由第三段最后一句话“The small ears do not have a lot of area to have the blood vessels exposed to the cold so more heat is kept down in the body to help the hare stay warm.”可知A项正确。

　　4．What can be inferred from the last two paragraphs?

　　A．The Arctic hare have the world’s smallest feet.

　　B．The Arctic hare’s feet are big for their size.

　　C．The Arctic hare run away together in large groups.

　　D．The Arctic hare are easy to catch on the tundra.

　　答案　B

　　解析　推理判断题。由倒数第二段中的“The Arctic hare have the world’s smallest ‘Big Foot’．”可知，它们的脚相对于它们的个头有点大，其余选项与事实不符。

　　Ⅱ.完形填空

　　Just when I thought that life was dealing me hard blows，more blows came along.I

　　5

　　the meaning of life.No matter how hard I asked，there was no

　　6

　　from the walls of my bedroom.In the stillness of the night，huddled(蜷缩的) on my bed，I let my tears

　　7

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