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【多选题】
关于膈神经的叙述正确的有（）A.
发自颈丛
B.
经胸廓上口进入纵隔
C.
为感觉性神经
D.
为运动性神经
E.
躯体运动纤维支配膈肌
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举一反三
【单选题】We have not obtained very much experiment data ______ conclusion between the two possibilities.
A.
on which to base
B.
to base on
C.
which is based on
D.
to be based on
【简答题】Olaf Stapledon wrote a book called First and Last Men, in which he looked millions of years ahead. He told of different men and of strange civilisations（文明）, broken up by long 'dark ages' in between. ...
【单选题】The intelligence department was accused of failure to ( ) the troops to the possibility of an enemy attack during the weekend.
A.
instruct
B.
warn
C.
dictate
D.
alert
【单选题】With the ___, the customer kills off the downside risk and keeps the upside possibility.
A.
shares
B.
option
C.
stocks
D.
futures
【单选题】Which of the following is true of Livingston?
A.
He thinks he has discovered a new possibility in the link between sun spots and the weather on the Earth.
B.
He has great doubts about the theory that the sun' s frequent changes have an influenced on the Earth' s climate.
C.
He has been recently informed by other scientists of the possibility that more sun spots will appear.
D.
He does not think the causes of the sun spots will be fully revealed by scientists in the near future.
【单选题】可逆反应A(g)+3B(g)⇌2C(g)+2D(s)为一放热反应,达到平衡后,要使正反应速率加快,同时平衡向正反应方向移动,可采取的措施是( )
A.
增大压强
B.
增大D的浓度
C.
使用催化剂
D.
升高温度
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