下图装置常用来测定空气中氧气的含量。下列对该实验的认识中正确的是 ( ) A．

All of the following could be objectives of a passive investor in commodities, except:（）

A. Risk diversification.

B. Inflation protection.

C. Anticipating good performance during periods of economic growth.

涩精止遗药服用时宜（）

A.饭前服

B.饭后服

C.空腹服

D.睡前服

E.不拘时服

The grass seeds which were sown in Spring are beginning to ________.

A．come out

B．come up

C．come over

D．come in

记载了痹证之手指关节肿大者为“鼓槌风”的著作是（）。

A.《内经》

B.《金匮要略》

C.《诸病源候论》

D.《证治准绳》

E.《医宗必读》