园路常见的病害有裂缝、啃边和（）等。_爱下问搜题

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问题填空题

园路常见的病害有裂缝、啃边和（）等。

答案

参考答案：翻浆

补全对话，情景问答

从方框中选择恰当的选项补全对话。其中有两项是多余的。

A. We will be free the day after that.
B. I want to ask you a question.
C. When are you going to take the tour?
D. Could you give me some help?
E. What places are you going to visit?
F. We'll have a day off. We are going to fly there.

A: Excuse me, sir.   1
B: Sure. What can I do for you, young man?
A:   2   So our class want to go on a trip. I'd like to look for some sightseeing information. I want to know
    if you have a one-day tour.
B: Of course we do. We have many such tours.   3
A: Well, we are going to visit Furong Cave (芙蓉洞), Three Natural Bridges (天生三桥), Fairy Mountain
    (仙女山) and so on.
B: They are interesting places in Wulong.   4
A: Well, today is Jan 8th. And we still have another four days before the final exams.   5
B: Oh, I see.

填空题案例分析题

如图是HIV感染人体细胞过程的示意图。回答下列问题。

图中①～⑧所示的过程中，遵循碱基互补配对原则的是（）。