“落笔惊风雨，诗成泣鬼神”是（）的诗句。
A.李贺
B.李白
C.白居易
D.杜甫
参考答案：D
We have worked for a long time. Let's stop a rest. [ ]
A. to have
B. having
C. has
D. had
为什么要重视培养基成分对灭菌的影响？
