Although phosphorus is an essential constituent of all living creatures, ____ is among the least abundant of the mineral nutrients.

试卷相关题目

• 1Thank you for inviting us, but my husband is not really interested ________.

  A.in going dancing

  B.for going dancing

  C.going to dance

  D.to go dancing

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• 2The next morning she found the man ________ in bed, dead.

  A.lying

  B.lie

  C.lay

  D.laying

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• 3A red flag was placed there ________ a ________ of danger.

  A.as ;view

  B.like ;signal

  C.for ;sight

  D.as ;sign

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• 4One advantage of playing the guitar is ______ it can give you a great deal of pleasure.

  A.how

  B.why

  C.that

  D.when

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• 5The children were ________ weeding the garden.

  A.busy

  B.employed in

  C.employ

  D.both A and B

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• 6He ________ to school without having breakfast, but now he ________ up early and has enough time for breakfast.

  A.used to go ;is used to get

  B.was used to go ;uses to get

  C.used to go ;has got used to getting

  D.got used to go ;is used to getting

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• 7After he failed in everything he had tried, he turned to ________.

  A.grow rice

  B.plant rice

  C.growing rice

  D.planting rice

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• 8In the past, ice used to ______ used to ______ the air in a room.

  A.be; cool

  B.be; cooling

  C.being; cool

  D.being; cooling

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• 9“Five ________ to four is nine,”the pupil answered.

  A.adding

  B.added

  C.adds

  D.is added

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• 10We are going to stay at ________ hotel as we did last year.

  A.such

  B.the same

  C.that same

  D.such a

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