The scientists are trying to _____ natural energy to decrease air pollution.

试卷相关题目

• 1-Do you think the bad weather will _______ ? -I hope not.

  A.keep on

  B.go on

  C.take up

  D.keep up

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• 2The bright flowers and warm winds______that spring was here.

  A.announced

  B.declared

  C.tell

  D.published

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• 3_____ you _____ the climate here?

  A.Used ; to

  B.Are; used to

  C.Do; used to

  D.Were; use to

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• 4I' m sorry, I mistook you _____ your sister _____ mistake.

  A.for, by

  B.by, for

  C.by, by

  D.for, for

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• 5When did China ______ the first man-made satellite to circle the earth, do you know?

  A.send for

  B.send up

  C.send off

  D.send out

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• 6--Would you be _____ to help me with my study?---I'll be very glad _____ it.

  A.too kind, doing

  B.very kind, doing

  C.as kind as, to do

  D.so kind as, to do

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• 7“______something valuable and throw the rest away,”the mother asked her children when they were cleaning the old house.

  A.Pick up

  B.Pick out

  C.Pick from

  D.Pick off

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• 8A great many students have dropped out of school and now the number of our class has______51.

  A.increased to

  B.increased by

  C.reduced by

  D.reduced to

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• 9We must _____ on our study..

  A.concentrate

  B.concentrate at

  C.concentrate on

  D.concentrate with

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• 10Stand there! I'll ______ you.

  A.take down

  B.take photos of

  C.take off

  D.take notes

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