________ is very important in doing any scientific work.

试卷相关题目

• 1I think everyone should donate blood _____ he is healthy because that's a citizen's responsibility.

  A.as if

  B.as long as

  C.now that

  D.in order that

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• 2She took the boy _____ the hand and led him _____ the zero.

  A.in…by

  B.on…at

  C.at…in

  D.by…round

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• 3The children put on _______ one-act play last Saturday._______ play amused everyone of us.

  A.an…..An

  B.a….An

  C.an…The

  D.a….The

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• 4It was early in the morning and the traffic was ______.

  A.fluent

  B.free

  C.light

  D.little

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• 5It's______good feeling for student's to return to school after______summer vacation.

  A.a; the

  B.a; a

  C.a; the

  D.a; /

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• 6Mr. Smith has promised that all of us will pass the exam, so it ____ so difficult as you imagine.

  A.can't have been

  B.can't be

  C.mustn't have been

  D.mustn't be

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• 7He told us to take as _______ as we need.

  A.a new

  B.many

  C.little

  D.much

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• 8People who have _______ flood often say that's _______ .

  A.experienced; terrifying experience

  B.experimented; terrifying experience

  C.experienced; a terrifying experience

  D.experimented; a terrifying experience

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• 9_________you look at the ocean from the beach or on the map, remember that what you   is only the surface .

  A.The next time; will see

  B.For the next time; are seeing

  C.Next time; are seeing

  D.Next time; will see

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• 10An earthquake ______ Yushu, China in April, 2010, _______ about 2000 deaths.

  A.occurred; affecting

  B.occurred; causing

  C.struck; affecting

  D.struck; causing

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