试题与答案

下列关于酶的叙述,不正确的是[ ] A.酶是活细胞内产生的一类具有生物催化作用的

题型:选择题

题目:

下列关于酶的叙述,不正确的是[ ]

A.酶是活细胞内产生的一类具有生物催化作用的有机物

B.酶的催化作用具有专一性和高效性

C.酶的合成场所都是核糖体

D.过酸、过碱的外界条件都能使酶的分子结构遭到破坏而失去活性

答案:

答案:C

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题型:阅读理解
Accident Report Form
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A car crashed into a tree.
People were all trapped in the car.
Weather conditions
There was a heavy snow.
Date of call
December 3,2009
Time of call
9:30 pm
Name of caller
Mrs. Green
Place
Zhongshan Road, Harbin
Conditions of victims
Mr Green hurt his head.
Mrs Green hurt her left leg.
Their daughter felt terrified.
Action
Policement arrived at 9:40 pm and sent the victims to Gulou Hospital at 9:45 pm.
小题1:What time did Mrs Green call the police?
A.At 9:30 am          B.At 9:30 pm           C.At 9:40 pm
小题2:How many people were trapped in the car?
A.One                 B.Two                 C.Three
小题3:Whose left leg was hurt?
A.Mrs Green’s         B.Mr Green’s           C.Mrs Green’s daughter’s.
小题4:How was the weather that day?
A.It was sunny         B.It was snowy         C.It was rainy.
小题5:Which of the following is TRUE?
A.The car crashed into a wall.
B.The policemen arrived half an hour later and sent the victims to the hospital.
C.The car accident happened on Zhongshan Road in Harbin.
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