六、根据句意及首字母提示完成单词（10分）

1.We should c       ourselves in the face of difficulties.

2.The spirit of these climbers shows us that we should never give up trying to a       our dreams.

3.Humans can sometimes be stronger than the f       of nature.

4.The Caspian Sea is the d       of all the salt lakes.

5.When the baby sees her mother, she runs over with e        .

6.The Sahara is the biggest d       in the world.

7.China is the biggest country in A       .

8.The p       is increasing at about 6% per year.

9.Qomolangma is the most d       mountain in the world.

10.Many climbers risk their l      .