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【单选题】
My parents didn't allow me ____ a bike when I was in the middle school.A.
to buy
B.
buying
C.
bought
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【简答题】一类在水溶液中不电离出比任何形式的离子，亲水基主要由具有一定数量的含氧基团构成亲水性，靠与形成氢键实现溶解的表面活性剂叫做A. 非离子表面活性剂
【单选题】Who were the subjects of the IBD study?
A.
Scientific pioneers.
B.
Prominent politicians.
C.
Outstanding scholars.
D.
Successful businessmen.
【单选题】Tom was the only one of the students who ________ named Outstanding Student. A. is B. are C. was D. were
A.
is
B.
are
C.
was
D.
were
【简答题】Linda British was an outstanding teacher who felt that if she had the time, she would like to create great art and poetry. When she was 28, however, she began to get severe 36 . Her doctors discovered...
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