可以用肺量计直接测定的指标是（）

A.最大通气量

B.静息通气量

C.肺活量

D.用力呼气量

E.用力呼气中期流速

用所给词的适当形式填空。

1. My idea is_____ (difference)from yours.

2. You should look after yourself well and keep _____ (health).

3. Everyone should have a good habit of brushing _____ ( tooth).

4. —Sally, your dress looks so nice!

   —Thank you. It _____ (make) of silk.