In manufacturing, cheaper materials are constantly being ______ for the better, more expensive kind.

试卷相关题目

• 1South Korean pop singer Chae Yeon came to Beijing on March 18th to__________ her new album My Love．

  A.relieve

  B.release

  C.collect

  D.investigate

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• 2According to a recent U.S. survey, children spent up to 25 hours a week ____ TV.

  A.to watch

  B.to watching

  C.watching

  D.watch

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• 3--- I need to advertise for a roommate for next term. --- _______？Mary is interested.

  A.Why bother

  B.Why not

  C.So what

  D.What for

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• 4While income worry is _______ rather common problem of the aged, loneliness is another problem that _______ aged parents may face. 

  A.a; the

  B.the; /

  C.a; /

  D.the; the

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• 5I'm not sure how much scholarship you will receive, but it will roughly _______ your major expenses.

  A.swap

  B.abolish

  C.settle

  D.cover

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• 6This book_______ 10 units , _______ two revision units.

  A.includes; containing

  B.contains; including

  C.contains; included

  D.includes; containing

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• 7---Thank you for your timely help. --- My pleasure. It is hardly ______ talking about.

  A.worthy

  B.worthwhile

  C.worth

  D.useful

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• 8Two years ago, she bought an expensive mountain bike and then she persuaded me to buy _______.

  A.this

  B.that

  C.it

  D.one

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• 9The manager promised to keep us______ of how our business was going on.

  A.being informed

  B.informed

  C.informing

  D.to be informed

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• 10—Will you be ______ this evening, Mary? —That depends. I am afraid I will be with my manager discussing a plan.

  A.demanding

  B.suitable

  C.available

  D.efficient

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