下图表示过氧化氢被分解的曲线，可说明酶具有 ①专一性 ②高效_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

下图表示过氧化氢被分解的曲线，可说明酶具有

①专一性 ②高效性 ③催化特性 ④在温和条件下进行

[ ]

A．①④

B．②③

C．①②

D．③④

答案

答案：B

补全对话，情景问答

补全对话。从方框中所给的选项中选择正确句子补全以下对话。

A: Good morning, Jim. Would you please tell us what you do recently?
B: Well, 1           Then I fix them up and give them away (赠送) to kids
    who have no money to buy their own bikes.
A: 2           What gave you the idea?
B: I guess I take after my father. He's always helping people.
A: Wow! 3
B: I guess so. But now I've run out of (耗尽了) money to buy old bikes.
A: Oh, that's too bad. 4
B: Yeah. I need to think up some way of getting money. 5

A. He must be proud of you.
B. I often buy or find old bikes that nobody wants.
C. That's very kind of you.
D. If I don't do that, I'll have to stop.
E. What are you going to do next?

判断题

凡未按照规定和要求提供伤亡保险金申报材料的，财务部门一律不予受理。