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【多选题】
关于男性尿道,说法正确的有A.
起于膀胱的尿道内口
B.
有尿道内口、外口、膜部三个狭窄
C.
给男病人导尿时，耻骨下弯恒定不变，耻骨前弯可以消失
D.
临床上将尿道前列腺部和尿道膜部称为前尿道，尿道海绵体部称为后尿道
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举一反三
【单选题】Try your best to run fast, ________ you will fall behind others. [ ]
A.
and
B.
but
C.
so
D.
or
【单选题】. As Christmas draws near, they feel more and more uneasy with their stored money ____.
A.
to be run out
B.
to run out of
C.
being run out
D.
running out
【单选题】Don't run in the hallways, or you may _____ somebody. [ ]
A.
knock into
B.
knock at
C.
fall into
D.
fall down
【单选题】It is said that the transport company will soon run ______ petroleum.
A.
over
B.
down
C.
off
D.
out of
【单选题】Beginning from a long run equilibrium in an increasing cost industry, if there is a substantial, permanent fall in demand for industry output:
A.
firms will leave the industry, the quantity produced will fall, and prices will end up lower than their initial long run equilibrium level.
B.
firms will leave the industry, the quantity produced will fall, and prices will end up higher than their initial long run equilibrium level.
C.
firms will leave the industry, the quantity produced will fall, and prices will end up at the same level as their initial long run equilibrium level.
D.
firms will enter the industry, the quantity produced will rise, and prices will end up lower than their initial long run equilibrium level.
【单选题】If oil supplies run out, the man may have to fall back on the horse.(改错题)
A.
run
B.
the man
C.
to fall
D.
on
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