加入水溶性有机溶剂，可使蛋白质凝聚，进而使与之结合的药物释放，不属于此类溶剂的是

I suppose you know everything about that event, ________ ？

A、do you

B、don't you

C、do I

Isuppose you know everything about that event,

A. don' t you

B. do I

C. do you

D. don' t I

I like to have everything under control, and I don’t want any last minute.

A.surprise

B.nervous

C.panic

D.shock

A、ask

B、asking

C、to ask

D、in asking

A．pause

B．stop

C．wait

D．hesitate

A．pause

B．stop

C．wait

D．hesitate

When you have difficulties in translating the article, don’t (_______) to ask me.

A. hesitate

B. hesitant

C. hesitance

D. hesitation