现有化学反应:X+Y==Z,若将agX和bgY在一定条件下充分反应,生成物Z的质量[ ]
A.等于(a+b)g
B.大于(a+b)g
C.小于(a+b)g
D.不大于(a+b)g
答案:D
属于非核苷类抗病毒药()
A.齐多夫定
B.阿昔洛韦
C.氟康唑
D.茚地那韦
E.奥司他韦
句型转换。(10分)
小题1:Must we drink eight cups of water every day?(作否定回答)
小题1:
No,_______ _______ _______ _______.
小题2:You’d better ask our computer teacher for help. (改为否定句)
小题2:
You’d better _______ _______ our computer teacher for help.
小题3: I play basketball twice a week. (对画线部分提问)
小题3:
_______ _______ do you play basketball?
小题4: You mustn’t smoke here. (同义句转换)
小题4:
_______ ______ here!