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4.Scientists ________ in many ways for their contributions _______ the development and

progress of human society.

   A.always honour; to          B.always honour; for

   C.are always honoured; to        D.are always honoured;for

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3.He spent a large ______ of money on his clothes, which was ______ more than his earnings.

   A.number; a little   B.piece; a great deal   C.deal; lot   D.amount; far

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2.Jack had travelled six miles across the channel ________ his engine failed and was forced to

land on the sea.

   A.when      B.until      C.after      D.since

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第一节:单项填空(共20小题;每小题0.5分,满分10分)

1.----- Let’s go Dutch for this supper, OK?

----- No, __________ this time, as a reward for all your help.

A.it’s up to you   B.it’s my treat   C.let’s talk about it   D.it doesn’t matter

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17.已知的解集

      

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16.若某个多面体的三视图如图所示,那么该几何体

的体积为      

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15.已知均为单位向量,且它们的夹角为60°,当取最小值时,

      

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14.若圆柱的母线与底面直径和为3,则该圆柱的侧面积的最大值为      

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13.将一颗质地均匀的正方体骰子(六个面的点数分别为)先后抛掷两次,记第一次出现的点数为,第二次出现的点数为,则事件“”的概率

      

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12.已知一组数据为,5,4,6,若这组数据的平均数为5,方差为2,则||的值为      

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