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【简答题】
利用行政记录收集数据是一种重要的统计调查方法，请简述该方法的主要特点以及在应用中应注意的问题。
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皮皮学刷刷变学霸
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【单选题】—How wide is the river? —It's _____. [ ]
A.
100 metres wide.
B.
100 metre wide
C.
100-metre-wide
D.
100-metres-wide
【单选题】Not only (there is) (a wide range of) prices for goods in the city, there is (also) a wide range in the quality of goods (on sale).
A.
there is
B.
a wide range of
C.
also
D.
on sale
【单选题】Let us take care of the house while you are away, ______ ?
A.
shan't we
B.
shall we
C.
don't you
D.
will you
【单选题】目前非洲猪瘟无有效疫苗防控的原因()
A.
非洲猪瘟病毒无免疫原性
B.
非洲猪瘟病毒无反应原性
C.
非洲猪瘟病毒存在免疫抑制
D.
非洲猪瘟病毒与亚洲猪瘟存在中和反应
E.
非洲猪瘟病毒产生的抗体仅能降低病毒感染性，并不中和病毒
【单选题】Let us take a brief look at the planet on which we live. As Earth hurtles through space at a speed of 70,000 miles an hour, it spins, as we all know, on its axis, which causes it to be flattened at th...
A.
it is about 20 to 40 miles thick
B.
it is thin in proportion to the earth's mass
C.
it is softer than the central core
D.
it is thinner than the surrounding layer
【单选题】Let us take care of the house while you are away，________？ [ ]
A.
will y ou
B.
shall we
C.
shan’t we
D.
don’t you
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