题目

做匀加速直线运动的物体运动的初速度为 6m/s，经过 10s 速度大小变为 20m/s，则加速度大小是A.0.8 m/s2 B.1.4 m/s2 C.2.0 m/s2 D.2.6 m/s2 答案：【答案】B【解析】根据v=v0+at可得A．0.8 m/s2，与结论不相符，选项A错误；B．1.4 m/s2，与结论相符，选项B正确；C．2.0 m/s2，与结论不相符，选项C错误；D．2.6 m/s2，与结论不相符，选项D错误；Mr. Smith gave his wife ten pounds for her birthday．The day after her birthday Mrs. Smith went shopping．She got on    36   and sat down next to an old lady．  37    she noticed that the old lady’s handbag was   38   ．Inside it, she found a wad（沓）of pound notes   39   the one her husband had given her. She quickly   40   her own bag—the notes were    41   .Mrs. Smith was now sure that the old lady sitting   42   her must have stolen them．She thought    43   not have to call the    44   as she didn’t like getting people    45  ． So she decided to take back the money   46   the lady’s handbag and say   47  about it．She looked around the bus to make sure   48  was watching, then she carefully put her hand into   49   handbag, took out the notes and   50   her own handbag． When she got home that evening, she showed   51  the beautiful hat she had bought．“How did you   52   it?” he asked．“  53  you gave me for my birthday, of course．”“Oh,   54  then?” he asked, as he   55   a wad of pound notes on the table． 【小题1】.．A．a busB．a trainC．an old shipD．a plane 【小题2】.．A．In a minuteB．After a whileC．For a secondD．On the moment【小题3】.．A．goodB．oldC．openD．shut【小题4】.．A．the same that B．perhaps wasC．probably asD．exactly like【小题5】.．A．looked atB．watched carefullyC．saw toD．looked into【小题6】.．A．goneB．missedC．disappearD．found【小题7】.．A．closeB．next toC．beforeD．behind【小题8】. A．she wouldB．he couldC．she mustD．he might【小题9】.．A．driverB．old ladyC．policeD．husband【小题10】.．A．to difficultyB．into troubleC．out of workD．seeing her【小题11】. A．intoB．outC．awayD．from【小题12】.．A．somethingB．everythingC．anythingD．nothing【小题13】. A．nothingB．somebodyC．nobodyD．neither【小题14】.．A．the old lady’s B．her husband’s C．the police’sD．her own【小题15】.．A．gave it away B．put them into C．brought them outD．took it to【小题16】.．A．the driverB．the policeC．the old ladyD．her husband【小题17】.．A．pay forB．spend onC．cost inD．take to【小题18】.．A．Use themB．With the money C．With thatD．Using it【小题19】.．A．how is itB．what’s thatC．where is itD．why is this【小题20】.．A．put upB．held outC．pointed toD．handed up