洛匹那韦/利托那韦的作用机制是（）
A.核苷类反转录酶抑制药
B.非核苷类反转录酶抑制药
C.蛋白酶抑制药
D.整合酶抑制药
E.融合抑制药
参考答案：C
春天来了，你还有哪些新发现？请把下面这首儿歌补充完整。
冰雪，____啦，
雷声，___ 啦，
杏花，____啦，
燕子，____啦，
青蛙，____啦。
22.—Boy, ____________
—It is, looks like spring is coming soon.
—Yeh, It'll just be a few more weeks.
A．it's really a nice day today, isn't it?
B．what knid of weather are we going to have today?
C．do you think it is going to rain today?
D．what' it like outside today?
