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【单选题】
下列哪项X线征象是周围型肺癌最常见的特征 ( )A.
圆形或类圆形肿块呈分叶状，有脐样切迹或有毛刺
B.
阻塞性肺炎
C.
肺肺叶的局限性肺气肿
D.
出现囊状空洞或斑片状浸润
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】小纸片会在发声的扬声器上跳动 , 树叶随风荡漾发出 “ 哗哗 ” 的响声,这些现象说明了 ( )
A.
声音是由物体振动产生的
B.
声音能在水中传播
C.
声音的传播需要介质
D.
声音能传递信息
【单选题】The girl usually does her homework _____ it is very late at night.
A.
until
B.
when
C.
before
【单选题】The girl usually does her homework _____ it is very late at night .
A.
until
B.
when
C.
before
D.
after
【单选题】The girl usually has supper by herself ____her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
【单选题】The girl usually has supper buy herself___her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
【简答题】已知3,X,21三个数成等差数列,则X等于( )。
【简答题】听下面一段对话，回答第1小题。 1. How long does the girl usually spend on her homework? A. For half an hour B. For about two hours. C. For about three hours.
【单选题】The girl usually her as supper by herself _________her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
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