根据括号内所给词的适当形式填空

1. It is very           (importance) for us to work hard for a better life.    

2. We have a           (please) journey during the l0-day holiday.    

3. The villagers got good           (medicine) care in the countryside.    

4. Now I can go to work instead of           (go) by car.    

5. Jack is very happy, because he got an "A" in the           (finally) exam.

在煤的发热量测定过程中，温度的读数要估读到（）。

A.0.01℃

B.0.02℃

C.0.002℃

D.0.001