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问题 选择题

所含溶质质量、溶液体积都相等的稀硫酸分别与足量的颗粒大小和形状几乎相同的镁、铁、锌三种金属反应，下列图象能正确表示生成氢气质量与反应时之间关系的是（　　）

A．

B．

C．

D．

答案

A、根据题意完全反应后放出氢气质量相等；而由关系图，三个反应最终放出氢气质量不相等，与反应事实不符；故A不正确；

B、根据题意完全反应后放出氢气质量相等并且镁反应速率大最先完全反应，其次为锌，铁最后完成反应；关系图所表示与反应事实相符；故B正确；

C、根据题意镁反应速率大最先完全反应，其次为锌，铁最后完成反应；而由关系图，铁先于锌完成反应，与反应事实不符；故C不正确；

D、根据题意完全反应后放出氢气质量相等；而由关系图，三个反应最终放出氢气质量不相等，与反应事实不符；故D不正确；

故选B．

单项选择题

2003年12月某晚，被告人肖某驾驶微型车载着被告人谢某和巫某从福建省清流县某镇开到该县交通局设在某岔路口的收费站上，收费站工作人员李红英让其交费，被告人肖某对谢某说“要交费”，被告人谢某叫道“本地的车怎么也要交费”，坐在后座的巫某即下车抬栏杆，收费站人员林某上前制止，双方发生争吵，被告人谢某便一脚踢到林某小腹，林某被踢到后即朝收费站办公室方向跑，被告人谢某迫打林某。巫某强行把栏杆抬起，叫被告人肖某把车开过去，巫某也追上去参与打林某，收费站工作人员李国富等7人闻息前来劝阻。被告人谢某、巫某又与其他收费站工作人员发生吵打。被告人肖某将车开过岗亭停在路边后，上前劝架未果，后来也参与打收费站其他人员。经法医鉴定林某为轻微伤三级。李国富等7人伤情为轻微伤一级。另查：林某等人属于清流县征收站的合同工，取得了交通部颁发的行政执法证。请问，谢某、肖某的行为()

A．构成拒不执行判决、裁定罪

B．故意伤害罪

C．不构成犯罪

D．构成妨害公务罪
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单项选择题

All her life, my mother wanted busy children. It was very important that her house should remain at all times clean and tidy.
You could turn your back for a moment in my mother’s house, leave a half written letter on the dining table, a magazine open on the chair, and turn around to find that my mother had "put it back where it belonged," as she explained. My wife, on one of her first visits to my mother’s house, placed a packet of biscuits on an end table and went to the kitchen to fetch a drink. When she returned, she found the packet had been removed. Confused, she set down her drink and went back to the kitchen for more biscuits, only to return to find that her drink had disappeared. Up to then she had guessed that everyone in my family held onto their drinks so as not to make water rings on the end tables. Now she knows better.
These disappearances had a confusing effect on our family. We were all inclined to forgetfulness, and it was common for one of us, upon returning from the bathroom, to find the every sign of his work in progress had disappeared suddenly. "Do you remember what I was doing" was a question frequently asked, but rarely answered.
Now my sister has developed a secondhand love of clean windows, and my brother does the cleaning in his house, perhaps to avoid having to be the one to lift his feet. I try not to think about it too much, but I have at this later time started to dust the furniture once a week.

This passage mainly tells us that

A．my mother often made us confused
B．my family members had a poor memory
C．my mother helped us to form a good habit
D．my wife was surprised when she visited my mother
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