根据句意和所给的中文提示，写出句子中的单词。

小题1:Could you tell me the ________________ (高度) of Qomolangma?

小题2:It is well known that the Diaoyu Islands ______________ (属于) to China.

小题3:People who eat a balanced diet should be ______________ (健康) than those who only eat biscuits and hamburgers.

小题4:The customs in Qingdao are ________________ (相似的) to those in Yantai.

小题5:Tom _______________ (准备) for the final exam. Please be quiet!

B. 根据句意，用所给单词的适当形式填空。

小题6:He ________________ (be) a volunteer in Ya-an, Sichuan since the earthquake happened.

小题7:Mr. Jiang is a learned person, and he has lots of ________________ (know).

小题8:The little girl is very kind and she always talks to people ______________ (polite).

小题9:All the ______________ (village) living conditions have greatly in recent years.

小题10:My teacher did what he could _______________ (make) his class lively.

长江、黄河都发源于（　　）

A．青海省

B．四川省

C．西藏自治区

D．新疆维吾尔自治区