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问题 单项选择题

人口密度最小的自治区是（），每平方公里仅1．6人，是全国人口密度的1／70

A、新疆维吾尔自治区

B、内蒙古自治区

C、西藏自治区

D、广西壮族自治区

答案

参考答案：C

阅读理解
根据短文内容在下面每个句子的空格中填上一个单词，使其意思与原文相符。
    Two Chinese skaters, Zhang Dan and her partner Zhang Hao, won an Olympic silver
medal (银牌) several months ago. 
    To win the gold medal (金牌) in the 2006 Winter Olympic Games, this pair of skaters
decided to do a special action, which they had done before. But unluckily, Zhang Dan fell
to the ice heavily and her legs were badly hurt. When all the people thought they would
give up the game, Zhang Dan and Zhang Hao came back to the ice field. What a brave
girl! Everyone was moved (感动) and gave them a warm welcome.  
     When the music started again, they went on with the show. They did all the actions well and finished their
performance. Everyone stood up and cheered. They got the second place, but in everyone's heart, they were the
best. They showed their great courage (勇气) to the world. And they told people that success belongs to (属于)
the persevering (坚持).
1. The two skaters are from _______.
2. They _______ a silver medal in the 2006 Winter Olympic Games.
3. They _______ to the ice field bravely, though Zhang Dan was badly hurt.
4. All the actions were done _______ after they went on with the show.
5. _______ was moved by their great courage.
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名词解释

蛋白质的超二级结构
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