0  410772  410780  410786  410790  410796  410798  410802  410808  410810  410816  410822  410826  410828  410832  410838  410840  410846  410850  410852  410856  410858  410862  410864  410866  410867  410868  410870  410871  410872  410874  410876  410880  410882  410886  410888  410892  410898  410900  410906  410910  410912  410916  410922  410928  410930  410936  410940  410942  410948  410952  410958  410966  447090 

5.一物体做匀加速直线运动,在第1个t s内位移为x1;第2个t s内位移为x2,则物体在第1个t s末的速度是                               (   )

  A.(x2-x1)/t             B.(x2+x1)/t    C.(x2-x1)/2t      D.(x2+x1)/2 t

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4. 如图所示是物体运动的v-t图象,从t=0开始,对原点的位移最大的时刻是(    )

A.t1

  B.t2

  C.t3

  D.t4

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3.一物体做匀减速直线运动,初速度为10m/s,加速度大小为1m/s2,则物体在停止运动前ls内的平均速度为                       (   )

  A.5.5 m/s      B.5 m/s     C.l m/s       D.0.5 m/s

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2.一辆农用“小四轮”漏油,假如每隔l s漏下一滴,车在平直公路上行驶,一位同学根据漏在路面上的油滴分布,分析“小四轮”的运动情况(已知车的运动方向)。下列说法中正确的是            (   )

  A.当沿运动方向油滴始终均匀分布时,车可能做匀速直线运动

  B.当沿运动方向油滴间距逐渐增大时,车一定在做匀加速直线运动

  C.当沿运动方向油滴间距逐渐增大时,车的加速度可能在减小

  D.当沿运动方向油滴间距逐渐增大时,车的加速度可能在增大

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1.关于自由落体运动,下面说法正确的是                   (   )

  A.它是竖直向下,v0=0,a=g的匀加速直线运动

  B.在开始连续的三个1s内通过的位移之比是1∶3∶5

  C.在开始连续的三个1s末的速度大小之比是1∶2∶3

  D.从开始运动起依次下落4.9cm、9.8cm、14.7cm,所经历的时间之比为1∶

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188.-I’ve got to go now. (2009重庆)

-Must you ?I ______you could stay for dinner with us.

A. think      B. thought   C. have thought   D. am thinking

189 Professor Williams keeps telling his students that the future ______to the well-educated. (2009重庆)A. belongs  B. is belonged  C. is belonging    D. will be belonged

190 Daniel's family    their holiday in Huangshan this time next week.(2009安徽)

   A. are enjoying    B. are to enjoy   C. will enjoy  D. will be enjoying

●答案

71-75BBDCD     76-80 BDCCC    81-85 BAABA    86-90 DCAAB   91-95ACDAC 96-100C DDAB    101-105 CACCB    106-110 CADBC  111-115BDCAD  116-120 CBDBA 121-125 DCCAD    126-130 BBDBA  131-135BDBBC  136-140CADAA  141-145ABDAD 146-150ACACA    151-155 DBBBD  156-160 CDDCA  161-165 CDADB  166-170 BADCB 171-175ACBAD   176-180CDDAA   181-185BCBCB   186-190ADBAD

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186.- What do you think of the movie?  (2009浙江)

    - It’s fantastic. The only pity is that I __________ the beginning of it.

A Missed            B. had missed       C. miss            D. would miss

187 She stared at the painting ,wondering where she ______it.(2009重庆)

A. saw     B. has seen   C. sees     D. had seen

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185.I was out of town at the time, so I don’t know exactly how it _______.(2009山东)

A.  was happening     B. happened    C. happens     D. has happened

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184.The number of foreign students attending Chinese universities ________ rising steadily since1990.

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

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183. John was given the same suitcase his father and grandfather ____ with them to school.

(2009北京)A. took   B. had taken   C. were taking   D. would take

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