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【简答题】
接触器允许操作频率是指在每小时内允许的( )频率
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皮皮学刷刷变学霸
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【简答题】Fred: When do you usually have your computer class?Jane: ______.
【简答题】J____ a minute. (=Wait a minute.)
【单选题】—Miss Sun has taught_____ Chinese for about 10 years. —You are lucky. _____ is a very good teacher.
A.
ours ; She
B.
our ; He
C.
us; She
D.
us ; He
【单选题】Wait a minute! The headmaster has to tell you.
A.
anything important
B.
nothing important
C.
something important
D.
important something
【单选题】具有5′ -CGGTA-3′顺序的单链DNA能与下列哪条RNA链互补?
A.
5′-GCCAT-3′
B.
5′-GCCAU-3′
C.
5′-UACCG-3′
D.
5′-TACCG-3′
【单选题】—____? —When she was seventeen.
A.
When was Jane born
B.
Who do you admire
C.
How old was Jane
D.
When did Jane win the Olympic medal
【单选题】What is the result of the major oil explorers’ change in exploration?
A.
Improved returns at lower prices
B.
Improved returns at higher prices
C.
High costs and high risks
D.
High risks and improved returns
相关题目：
【单选题】具有5′ -CGGTA-3′顺序的单链DNA能与下列哪条RNA链互补?
A.
5′-GCCAT-3′
B.
5′-GCCAU-3′
C.
5′-UACCG-3′
D.
5′-TACCG-3′