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【单选题】
In pure form , Si wafer does not contain any free charge carriersA.
载体
B.
载波
C.
载流子
D.
卡车
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皮皮学刷刷变学霸
举一反三
【单选题】I can wear an old suit with a little ______ so it will be more reasonable.
A.
alteration
B.
change
C.
conversion
D.
variation
【简答题】I can't ______ the little boy just how erous it is to swim that far out in the ocean! 我根本无法让这个小男孩明白在海上游出那么远有多危险!
【单选题】----How are you going, buddy? ----________. A little busy, though.
A.
Can’t be worse
B.
By train
C.
Not too bad
D.
on my own
【简答题】谈一谈,您对基础教育课程改革的认识?
【单选题】There will be ________water and ________trees in 100 years, how can we live?
A.
little, fewer
B.
less, less
C.
more, fewer
D.
less, fewer
【单选题】—______ English can you speak? —Only a little.
A.
How many
B.
How much
C.
Which
D.
What
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