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【单选题】
关于腹膜后间隙A.
是腹后壁腹膜和腹内筋膜之间的间隙
B.
间隙内含疏松的结缔组织，没有器官
C.
此处腹膜因于结缔组织联系紧密而不易剥离
D.
是化脓性感染不易扩散的部位
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举一反三
【单选题】To deliver a story, you should do all of the following EXCEPT ______.
A.
capturing the audience's attention right at the beginning
B.
making as few gestures as possible
C.
appealing to the audience's sense of sight
D.
monitoring feedback from the audience
【单选题】回答（48）题 查看材料
A.
It is a way of capturing something vibrant， making a statement about ourselves in clothes.
B.
Fashion is part of style.
C.
Rather， you focus on what is personally suitable and expressive.
D.
You can't have style. until you have a sense of who you are.
E.
They create a unique identity for themselves and express it through grooming and a few well-chosen clothes.
F.
People want to be themselves and to be seen as themselves.
【单选题】设a，b为正实数，下列结论正确的是（ ） ①若a 2 -b 2 =1，则a-b＜1； ②若 1 b - 1 a =1 ，则a-b＜1； ③若 | a - b |=1 ，则|a-b|＜1； ④若|a 3 -b 3 |=1，则|a-b|＜1．
A.
①②
B.
②④
C.
①③
D.
①④
【简答题】用符号>或< 填空: 设a
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