When ______ about one of the biggest problems today, many experts say that an energy crisis is approaching and is thus threatening mankind's survival．

试卷相关题目

• 1Varieties of household goods are sold here, ______from babies' toys to old men's walking sticks.

  A.changing

  B.exchanging

  C.ranging

  D.classifying

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• 2_______ in the IT company, David decided to say goodbye and start his own business.

  A.Having ignored

  B.To be ignored

  C.Ignored

  D.Ignoring

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• 3She gave me the suggestion that I try to ________ some money every month for special use.

  A.set back

  B.set off

  C.set down

  D.set aside

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• 4I'm glad to see the rapid progress ______in science and technology in the past decade.

  A.to make

  B.making

  C.made

  D.having made

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• 5Five books on the shelf are found ______.

  A.tear

  B.tearing

  C.tore

  D.torn

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• 6Each of　the　students, working　hard　at　his　lessons,__________to　go to key universities.

  A.hope

  B.hopes

  C.hoping

  D.hoped

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• 7The brave soldier was willing to risk ______ his life rather than ________ in to the enemy.

  A.lose; give

  B.losing; giving

  C.losing; give

  D.lose; giving

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• 8We have made up our minds to __________ teaching after we graduate from college.

  A.take in

  B.set in

  C.set up

  D.take up

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• 9The headmaster spoke at the meeting for about 2 hours without ________ his notes．

  A.according to

  B.looking for

  C.referring to

  D.looking up

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• 10________ of talking about the same problem over and over again, he suggested bringing the meeting to an end.

  A.Tiring

  B.Tired

  C.Having tired

  D.Tiring himself

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