0  320779  320787  320793  320797  320803  320805  320809  320815  320817  320823  320829  320833  320835  320839  320845  320847  320853  320857  320859  320863  320865  320869  320871  320873  320874  320875  320877  320878  320879  320881  320883  320887  320889  320893  320895  320899  320905  320907  320913  320917  320919  320923  320929  320935  320937  320943  320947  320949  320955  320959  320965  320973  447090 

26.The minister stressed that under no circumstances ____ the disabled to be looked down upon.

    A.is             B.are           C.has           D.have

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25.It seems as if they are going to ____ us a lot of money for the party hall.

    A.cost          B.ask           C.demand       D.charge

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24.It was with great excitement one morning in July ________ the young man read a classified advertisement.

    A.when          B.that           C.who           D.which

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23.It is obvious that this anti-smoking ____ is mainly aimed at young teenagers.

    A.campaign      B.war           C.battle         D.fighting

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22.He admitted that when ____ comes to repairing a computer, he had little knowledge of it .

    A.he            B.that           B.this           D.it

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第一节:单项填空(共15小题,每小题1分,满分15分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该选项的标号涂黑。

21.-Do you think the weather is good enough for the picnic?

    -Yes.You couldn't hope for ____ day at this time of the year.

    A.a nice         B.the nice        C.a nicer         D.the nicest

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8.[解析]:⑴炸弹作平抛运动,设炸弹脱离飞机到击中目标所飞行的水平距离为x,

联立以上各式解得 

设击中目标时的竖直速度大小为vy,击中目标时的速度大小为v

      

联立以上各式解得

⑵①当筒不转动时,物块静止在筒壁A点时受到的重力、摩擦力和支持力三力作用而平衡,由平衡条     件得摩擦力的大小   支持力的大小

②当物块在A点随筒做匀速转动,且其所受到的摩擦力为零时,物块在筒壁A点时受到的重力和支持力作用,它们的合力提供向心力,设筒转动的角速度为有  

  由几何关系得   联立以上各式解得

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7.[答案]

  [解析]由机械能守恒定律得

   在圆轨道最高处:

   联立以上各式得

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