有一架托盘天平，没有游码，最小砝码为1g，用这架已经调好的托盘天平称量一个物体的质量．当在右盘上加35g砝码时，天平指针向左偏一小格；如果在右盘中再加一个1g砝码，则指针向右偏1.5格，那么所测物体的质量为（　　）

A．36.4g

B．35.6g

C．35.4g

D．36.6g

根据句子意思，用括号中所给词的正确形式填空，每空填一词。

1. Three ______ (four) of the students in our class have handed in their reports.

2. You needn't be frightened because these insects are completely ______ (harm).

3. If you add some lemonade and sugar, the dish will be much ______ (taste).

4. How ______ (active) they are donating money to help the sick student!

5. Some of the film stars had been ______ (sing) before they entered the film industry.