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【单选题】
可使醛固酮分泌减少的因素是A.
循环血量减少
B.
血K+浓度下降
C.
血Na+浓度下降
D.
腺垂体分泌ACTH减少
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反馈参考答案：
举一反三
【简答题】NCE2L91SW: Summary Writing [Ref. at page 415 in nce2, lesson 91)
【单选题】Why does the man say you waste time waiting around doing nothing?
A.
You may get to the airport too early．
B.
You may spend a lot of time travelling to the airport．
C.
You may wait for some time on the plane before taking off．
【单选题】Why does the author start doing excercise
A.
It’s trendy.
B.
It is free for students.
C.
To keep healty.
D.
To kill time.
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