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【简答题】
何谓兴奋性？骨骼肌与心肌的兴奋性有何不同？
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举一反三
【单选题】Climbing the Great Wall might make you very tired, but it’s a meaningful _________.
A.
lesson
B.
experience
C.
story
D.
sentence
【简答题】A．They are feeling very tired. B．They think the climbing is rewarding. C．They are a little bit disappointed. D．They don't feel anything special.
【简答题】在正弦交流电路中，设电阻的端电压【图片】，若电阻上的电流【图片】和电压【图片】取关联参考方向，则在下面几个关系式中，一定正确的是（ ）。A. B. C. D.
【单选题】Mountain climbing ________ be very tiring, and many people feel sick ________ the atmosphere gets thinner.
A.
may; while
B.
can; as
C.
must; though
D.
should; for
【单选题】Rock-climbing is a breathtaking activity, very popular nationwide among young people, ______ cooperation as well as courage plays an important role.
A.
who
B.
where
C.
which
D.
of which
【简答题】If you have ever been rock climbing, then you will know that it is not a very easy sport. In fact you probably felt quite defeated when you first tried to do any serious climbing. Indoor and outdoor r...
【单选题】Rock-climbing is a breathtaking activity, very popular nationwide among young people, cooperation as well as courage plays an important role.
A.
who
B.
which
C.
that
D.
where
【单选题】Rock-climbing is a breathtaking activity, very popular nationwide among young people, ______ cooperation as well as courage plays an important role.
A.
who
B.
which
C.
where
D.
of which
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