查找药物信息的正确顺序是（）

A.一级信息源→二级信息源→三级信息源

B.二级信息源→三级信息源→一级信息源

C.三级信息源→二级信息源→一级信息源

D.三级信息源→一级信息源→二级信息源

E.二级信息源→一级信息源→三级信息源

完成句子

1. I don't know what he's doing.___(我也不关心).

2. He___(不可能去)to Beijing last night.I saw him just now.

3.____(毫无疑问) that he will win the match.

4. She insisted that she___(不需要帮助).

5. Though the experiment wasn't very successful, we ___(高度评价)his work in the experiment.