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【单选题】
用来测定细菌大小的单位是A.
cm
B.
mm
C.
μm
D.
pm
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反馈参考答案：
举一反三
【简答题】我国的国内航空货运单有 ( ) 联,包括 ( ) 联正本、 ( ) 联副本。
【单选题】We’ll take ________ trip to Hangzhou tomorrow.
A.
a two-days
B.
a two-day
C.
a two day’s
D.
a two day
【单选题】Dr. Jones ordered ______ for the laboratory.
A.
two pieces of equipments
B.
two equipments
C.
two pieces of equipment
D.
two piece equipments
【单选题】About______of these rooms______empty.
A.
two third, are
B.
two thirds, are
C.
two thirds, is
D.
two third, is
【单选题】______ number of the students in their school is about two thousand, ______ of them are boys.
A.
A; two thirds
B.
The; two third
C.
The; two thirds
D.
A; two third
【单选题】---We all wonder ____ the relationship between France and China is good again now? ---Because the two countries have common national benefits.
A.
why it is that
B.
why it is
C.
that it is why
D.
it is why
【简答题】数码摄影系统是由（）、（）、（）三大部分组成的。
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