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【单选题】
Lucy has got into a situation in her study ________ she finds it hard to go further. [ ]A.
that
B.
where
C.
which
D.
at which
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举一反三
【单选题】His writing depicts this changing world and the increasing cultural diversity of the United States.
A.
conflict
B.
refinement
C.
variety
D.
movement
【单选题】What does the author think interstellar travel can do?
A.
It practically enables human to escape the end of the world.
B.
It simply postpones the process of human extinction.
C.
It helps human avoid the fate of being vaporized or frozen.
D.
It is a way to help human escape from death by gravity.
【单选题】风和日丽的情况下,植物叶片在早上、中午和傍晚的水势变化趋势是
A.
低----高-------低
B.
高------低------高
C.
低-----低------高
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