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【单选题】
When Hitler decided to launch his ______ of Russia, he thought that nothing could stand in the way of his armies.A.
invasion
B.
occupation
C.
toll
D.
resistance
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举一反三
【单选题】Cells,first identified by the early microscopists, began to be considered______in the nineteenth century.
A.
them as microcosm of living organisms
B.
the microcosm of living organisms
C.
the microcosm of living organisms to be
D.
as which, the microcosm of living organisms
【单选题】There was no sense ______ him to come early since everything was ready.
A.
to ask
B.
to have asked
C.
in asking
D.
being asking
【简答题】教材P.14的题1-4:简述偏差式、零位式与微差式测量的工作原理及特点。
【简答题】液相色谱的五大系统是指:()系统、()系统、()系统、()系统、()系统。
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