皮皮学，免费搜题
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【单选题】
氮杂丝氨酸干扰核苷酸合成是因为它的结构相似于A.
丝氨酸
B.
甘氨酸
C.
谷氨酸
D.
天冬酰胺
E.
谷氨酰胺
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【单选题】假设你从互联网下载了植被地图，但该图比你的研究区大得多，你将用什么方法得到研究区植被图
A.
以研究区作为裁减图层，对植被地图执行裁减操作
B.
研究区与植被地图做叠置作交集操作
C.
研究区与植被地图做叠置作并集操作
D.
以植被地图作为裁减图层，对研究区执行裁减操作
【单选题】I don’t want to use the same tool _______ you used yesterday to repair the air conditioner.
A.
it
B.
that
C.
one
D.
what
【单选题】Why wouldn’t the car move one week later?
A.
The car ran out of gas.
B.
The gas tank was broken.
C.
The meter on the front panel was broken.
D.
He broke his car.
【单选题】—Excuse me. But I want to use your computer to type a report. —You _____have my computer if you don’t take care of it .
A.
shan’t
B.
might not
C.
needn’t
D.
shouldn’t
【单选题】Match the use of while with the category it belongs. While I don’t want to make a fuss, I feel I must protest at your interference.
A.
During the time that sth is happening
B.
At the same time as sth is happening
C.
As long as
D.
Although
E.
Whereas
【单选题】--What kind of mobile phone would you like? --Oh, I’d like one with a camera and I don’t want to ________ by cash.
A.
give
B.
pay
C.
use
D.
buy
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