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【简答题】
为什么生物体中存在5%左右的负超螺旋,有什么生物学意义呢
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反馈参考答案：
举一反三
【单选题】What caused the difference between “I did it yesterday” and “I done it yesterday”?
A.
Age.
B.
Dialect.
C.
Social class.
D.
Gender.
【单选题】患者，男性，21岁，因跳水时头部着地造成环椎裂开骨折伴颈髓损伤，其致伤原因是
A.
屈曲型损伤
B.
过伸型损伤
C.
病理性损伤
D.
屈曲牵拉型损伤
E.
垂直压缩型损伤
【单选题】在Word 2010中需要快速将当前表格拆分成两个表格时,可按下:
A.
“Ctrl+ Enter”组合键
B.
“Shift+Enter”组合键
C.
“Ctrl+Alt+Enter”组合键
D.
“Ctrl+Shift+Enter”组合键
【单选题】— Where did you pick up this wallet? — It was in the s upermarket _____ I did some shopping yesterday. [ ]
A.
that
B.
which
C.
where
D.
as
【单选题】--I went to visit the photo exhibition yesterday.—Oh, did you ?____.
A.
Nor did I
B.
So I did
C.
So did I
D.
Neither I did
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