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【单选题】
酶促作用对反应过程能量的影响在于:A.
提高活化能
B.
降低活化能
C.
提高产物的能量水平
D.
降低产物的能量水平
E.
降低反应的自由能
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反馈参考答案：
举一反三
【单选题】(Section B passage 1) 1.
A.
Children know how to handle a real gun.
B.
Children are not interested in real guns.
C.
Children know not to touch a real gun.
D.
Children won't know where a gun is hidden.
【单选题】Section B passage 1
A.
The sky is space.
B.
High in the sky the air is thin.
C.
There is nothing in the sky.
D.
The sky is all around the world.
【单选题】(Section B passage 1) 5.
A.
She fought against gun violence.
B.
She called on the Government to have gun control.
C.
She always put a gun in her car.
D.
She asked people to support gun ownership.
【简答题】( A ) Dear Jack, I am in China now. I have many new friends here. They are very friendly. I often have dinner with them. I like many kinds of Chinese food, like Sichuan food, Hunan food and Guan...
【单选题】(Section B passage 1) 3.
A.
She tried to get her gun.
B.
She crawled on the floor.
C.
She rushed to the madman.
D.
She ran to the door.
【简答题】Section B Passage 1
【单选题】(Section B passage 1) 2.
A.
They are 3-7 years old.
B.
They are 5-9 years old.
C.
They are 8-12 years old.
D.
They are 10-14 years old.
【单选题】(Section B passage 1) 2.
A.
They were serving customers at the restaurant.
B.
They were talking outside the restaurant.
C.
They were waiting for their car to be repaired.
D.
They were having lunch in the restaurant.
【单选题】(Section B passage 1) 3.
A.
Only a few.
B.
Half of the children.
C.
All of the children.
D.
Most of the children.
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