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26.I have battled with my     whether I should keep the extra money given to me or return it to the seller.

    A.consciousness  B.perseverance  C.motivation    D.conscience

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25.The three sister of the Soong family received their further education in America and all the customs and cultures there had a very     influence on the way they lived and thought.

    A.secure        B.significant     C.appropriate   D.diverse

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24.The National Day Parade for the 60th anniversary of the founding of China is so grand that it certainly doesn’t      the whole nation.

    A.let down      B.calm down    C.break down   D.set down

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23.It has been exposed that some government leaders    their authorities and privileges to get profits for themselves.

    A.employ       B.abuse        C.exploit        D.absorb

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22.With world economic crisis worsening, people    the government for more unemployment benefits.

    A.apply for      B.go for         C.appeal to     D.approve of

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第一节:单项填空(共10小题,每小题1分,满分10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,并在答题卡上将该项涂黑。

21.I can’t give you the thumbs up right now. I will have to go back to   with my director.

    A.deal         B.associate      C.bargain       D.consult

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19.(13分)如图所示,质量不计且足够长的倒L型支架下端固定在质量为2m的木板上,在其上端O处系一长为L的轻绳,绳的下端系一质量为m的小球,小球可视为质点。整个装置在光滑的水平面上以速度v0向右做匀速直线运动,水平面的右端为一矮墙。(重力加速度为g)

   (1)若木板与墙壁相碰立即与墙壁粘合在一起,试求碰后小球上升至最高点时绳中的张力大小。(小球在运动过程中不与支架相碰);

   (2)若木板与墙壁相碰后以原速率反弹,要使绳的最大偏角不超过90°,则生产L应满足什么条件?

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18.(12分)一水平传送带以v1=2m/s的速度匀速运动,将一粉笔头无初速度放在传送带上,达到相对静止时产生的划痕长L1=4m。现在让传送带以a2=1.5m/s2的加速度减速,将该粉笔头无初速度放在传送带上,求粉笔头在传送带上的划痕长度L2。求粉笔头相对传送带运动的位移L2。(取g=10m/s2)

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