问题 完形填空

Born in 1949, Diana Nyad took an early interest in swimming as a sport and was a Florida State High School swimming champion. Like many young athletes, she had Olympic dreams, but a serious illness kept her from competing in the Games. The disappointment didn’t stop her from going forward. Instead, she became interested in marathon swimming. A brilliant athlete, she was well-conditioned for spending long periods of time in the water. As a long-distance swimmer, she would compete against herself and the obstacles presented by distance, danger, cold, and exhaustion.

For ten years Nyad devoted herself to becoming one of the world’s best long-distance swimmers. In 1970, she swam a ten-mile marathon in Lake Ontario, setting the women’s record for the course. In 1972 she set another record by swimming 102.5 miles from an island in the Bahamas to the coast of Florida. Then she broke a third record when swimming around Manhattan Island in 1975.

Nyad attempted to swim the distance between Florida and Cuba in 1978. Though the span of water is less than 100 miles wide, it is rough and dangerous. After battling the water for two days, she had to give up for the sake of her own health and safety. Even so, she impressed the world with her courage and strong desire to succeed. For Nyad her strength of purpose was just as important as reaching Cuba. That is how she defined success. It did not matter that her swim came up short; she believed she had touched the other shore.

When Nyad ended her career as a swimmer, she continued to try new things---travelling the world as a reporter, writing books and giving public speeches about her life. Diana Nyad works to inspire others, just as she did when she swam the waters of the world.

小题1: What prevented Nyad from taking part in the Olympic Games? (No more than 5 words)

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小题2:What does the underlined word “obstacles” mean? (1 word)

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小题3:What achievement did Nyad make in 1970? (No more than 10 words.)

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小题4:Why did Nyad believe that she had touched the other shore? (No more than 10 words)

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答案

小题1:A serious illness(did).

小题2:Difficulties/Problems/Troubles/Challenges

小题3:She swam a ten-mile marathon and set women’s record.

Or: She swam a ten-mile marathon, setting the women’s record.

Or: She set the women’s record for a ten-mile marathon swimming.

小题4:Because she had tried her best ( to fulfill the task .)

Or: Her strength of purpose  was as important as reaching Cuba.

题目分析:本文叙述了一位名叫Nyad的游泳运动员顽强奋斗的故事。她因为得了疾病没法参加奥运会的游泳比赛。但是她没有放弃,继续努力,参加马拉松游比赛,并在1970年在女子马拉松游泳比赛中创造了新的记录。后来,她开始旅行,写书,她的作品激励着其他人继续前进。

小题1:根据第一段的but a serious illness kept her from competing in the Games. 可知一种严重的疾病阻止 Nyad参加奥运会比赛。因此此处问题的答案是A serious illness(did).

小题2:根据第一段的by distance,(距离) danger(危险), cold(寒冷), and exhaustion(精疲力尽)这些都是阻碍人前进的困难或麻烦。因此obstacles 的意思是Difficulties/Problems/Troubles/Challenges

小题3:根据第二段的In 1970, she swam a ten-mile marathon in Lake Ontario, setting the women’s record for the course. She swam a ten-mile marathon and set women’s record.可知她在1970年在女子马拉松游泳比赛中创造了新的记录。因答案是She swam a ten-mile marathon, setting the women’s record.或者 She set the women’s record for a ten-mile marathon swimming.

小题4:根据第三段的For Nyad her strength of purpose was just as important as reaching Cuba. 可知她虽然没有到达对岸,但是她的努力仍然很重要。因此问题的答案是Because she had tried her best ( to fulfill the task .)或者 Her strength of purpose  was as important as reaching Cuba.

问答题

㈠(1)某学生用螺旋测微器在测定某一金属丝的直径时,测得的结果如下图1所示,则该金属丝的直径d=______mm.另一位学生用游标尺上标有20等分刻度的游标卡尺测一工件的长度,测得的结果如图所2示,则该工件的长度L=______cm.

(2)如图3是某同学用打点计时器做的“研究小车的匀变速直线运动”实验时打出的一条纸带,A、B、C、D、E为该同学在纸带上选的计数点,相邻计数点间还有4个点未画出.

由图3可知:打点计时器打下D点时小车的瞬时速度为______m/s,小车的加速度为______ m/s2

㈡、为了验证碰撞中的动量守恒和检验两个小球的碰撞是否为弹性碰撞(碰撞过程中没有机械能损失),某同学选取了两个体积相同,质量不等的小球,按下述步骤做了如下实验:

①用天平测出两小球的质量分别为m1 和m2,且 m1>m2

②按照如图4所示的那样,安装好实验装置.将斜槽AB固定在桌边,使槽的末端点的切线水平.并与斜面BC连接在斜槽末端.

③先不放小球m2,让小球m1 从斜槽顶端A处由静止开始滚下,记下小球在斜面上的落点位置.

④将小球m2 放在斜槽前端边缘处,让小球m1从斜槽顶端A处滚下,使它们发生碰撞.记下小球m1和小球m2在斜面上的落点置.

⑤用毫米刻度尺量出各落点位置到斜槽末端点B的距离.图4中D、E、F点是该同学记下的小球在斜面上的几个落点位置,到B点的距离分别为LD,LE,LF

根据该同学的实验,回答下列问题:

(1)小球m1与m2发生碰撞后,m1的落点是图中的点______,m2的落点是图中的点______.

(2)用测得的物理量来表示,只要满足关系式______,则说明碰撞中动量是守恒的.

(3)用测得的物理量来表示,只要再满足关系式______,则说明两小球的碰撞时弹性碰撞.

单项选择题