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【简答题】
按冶炼时脱氧程度分类钢可以分成: ______ , ______ , ______ 和
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【单选题】This year they have produced_________ they produced the year before last.
A.
twice many cars as
B.
twice as many cars as
C.
twice more than cars
D.
twice the cars of
【单选题】下列关于溶组织内阿米巴的描述错误的是
A.
生活史有滋养体和包囊两个期
B.
滋养体按其形态可分为小滋养体和大滋养体
C.
小滋养体是组织致病型滋养体
D.
包囊对外界抵抗力强，四核包囊具有感染性
E.
溶组织内阿米巴又称痢疾阿米巴
【简答题】任意两个原子之间的连线称为原子列,其所指方向称为
【单选题】This year they have planted __trees __they did last year.
A.
as fewer; as
B.
less; than
C.
fewer; than
D.
fewer; as
【单选题】This year they have produced ( )grain ( )they did last year.
A.
as less，as
B.
as few，as
C.
less，than
D.
fewer，than
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