化学与生活息息相关，请你用化学知识回答以下生活中的问题．

（1）碘酒是家庭常备药，碘酒中的溶剂是_________（写化学式）

（2）炎热的夏季自行车车胎容易爆裂，原因是_______________；

（3）铝制品抗腐蚀性能很好，原理是__________________（用化学方程式表示）

（4）现有①黄瓜②豆腐③馒头④鸡蛋，其中富含蛋白质的是_______（填序号）

用所给动词的适当形式填空

1. When the teacher came in, the students stopped            (talk).

2. There           (be) a bookstore and two drugstores in the street .

3. I decided            (talk) to my parents about it .

4. By the time she got to the cinema, the movie                      (begin).

5.           ( spend ) time with family and friends is very important.

6. You are           (suppose) to shake hands when you meet a Chinese friend.

7. Li Ming                     (ask) to attend the meeting yesterday.

8. I           (have) an exciting party last weekend.

9. It's hot. You'd better                    (not put) on your coat.

10. By the time I got outside, the bus                     (leave).