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【单选题】
下列关于酶结构与功能的叙述,正确的A.
酶只在体内发挥作用
B.
酶的催化作用与温度无关
C.
酶能改变反应的平衡点
D.
酶能大大降低反应的活化能
E.
酶的催化作用不受调控
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【单选题】How do the children react when the other residents of Maycomb come outside to investigate the ruckus?
A.
They begin to cry, knowing they are caught
B.
They pretend that they do not know what is going on.
C.
They show up, looking anxious .
D.
They are shocked to hear that Mr. Radley shot at a Negro.
【单选题】听力原文： The City of Toddleston would like to make the following announcement to its residents. Beginning in June, construction along the main highway will begin for the next 3 weeks. This means that the...
A.
There will be construction.
B.
A side road is being built.
C.
A new highway is being constructed.
D.
The highway is being permanently shut down.
【单选题】What is the common mechanism of azotemia caused by acute and chronic renal insufficiency?
A.
Renal tubular reabsorption ↑
B.
Oliguria and anuria
C.
Glomerular filtration membrane permeability ↓
D.
GFR ↓↓
【单选题】The residents begin to flee the city because the crime problem is becoming more and more ______.
A.
unfathomable
B.
steadfast
C.
amassing
D.
insurmountable
【简答题】Write a brief report about the poll on P.95, which may begin with: In a recent poll taken by the Herald of the Town, 72 percent of the residents interviewed said the city government could do more for ...
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