根据下列句子及所给单词首字母，写出各单词的完全形式（每空限一词）

1. Your pale（苍白的）face s____bad health. You'd better go to see the doctor at once.    

2. What a delicious s    !I guess Mum is cooking fish in the kitchen now.    

3. Tommy has run out of money, so I o    him some help yesterday.    

4. Taiwan b     to China.    

5. Recently, our math teacher is i    in watching football games.

影响一定量气体占有气体体积大小的主要因素是  [ ]

A、气体分子的微粒数

B、微粒本身的大小

C、微粒的质量

D、微粒间的平均距离