17.月球上有大量的氦-3,“嫦娥一号”探月卫星执行的一项重要任务就是评估月球土壤中氦-3的分布和储量。已知两个氘核聚变生成一个氦-3和一个中子的核反应方程是H+H
―→He+n+3.26 MeV,现有4 g氘全部发生聚变,则释放的能量约为(NA为阿伏加德罗常数)( )
A.3.26 MeV B.2×3.26 MeV C.NA×3.26 MeV D.2NA×3.26 MeV
16.如图所示,M、N是输电线,甲是电流互感器,乙是电压互感器。已知n1∶n2=1∶100,n3∶n4=500∶1。若A表和V表的示数分别为10 A和44 V,则输电线输送的功率为( )
A.88 W B.440 W C.2.2×103 W D.2.2×107 W
15.下列说法正确的是( )
A.在光的双缝干涉实验中,把入射光由紫光改为红光,条纹间距将变窄
B.在光电效应实验中,把入射光由紫光改为红光,打出的光电子的最大初动能将增大
C.在光导纤维束内传送信号,是利用了光的全反射原理
D.在医院里常用紫外线对病房和手术室消毒,是因为紫外线比红外线的热效应显著
14.下列说法正确的是( )
A.已知油酸在水面上形成的单分子油膜的体积和面积,可以估测出油酸分子的直径
B.已知铁的摩尔质量和密度,可以求出阿伏加德罗常数
C.根据热力学第一定律,当气体膨胀时,气体的内能一定减小
D.根据热力学第二定律,第二类永动机可以制造成功
第三节:写作: (满分30分)
请以 Is Failure a Bad Thing 为题写一篇短文,要点如下:
1. 失败是常有的事。
2. 人们对失败有各种不同的态度。
3. 你对失败的态度。
___________________________________________________________________
___________________________________________________________________
2.只允许修改10处,多者(从十一处起)不计分。
One day Rosa wrote to her friend, who was a doctor, invite him to
have dinner with her families. A few days later the doctor wrote back
to her but she couldn’t read his writing because the letters were
written careless. Then she asked her husband for the help, but he
couldn’t read it, too. So the woman went to the chemist’s. The chemist in the shop studied the letter for a long time but he gave her large bottle of medicine. He told the woman she should eat twelve pills a day. Finally Rosa still had no idea whether her friend will come or not.
75. I turned down the offer because it would mean ______(频繁的)business trips away from my family.
第二节:短文改错 (共10小题;每小题1.5分,满分15分)
文中共有10处语言错误,每句中最多两处。错误涉及一个单词的增加、删除或修改。
增加:在此处加一个漏字符号(∧),并在其下面写出修改的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在其下面写出修改后的词。
注意:1. 每处错误及其修改均仅限一词;
74. Police are on the ______(痕迹)of a man who has robbed five companies in the last few months.
73. My father was so ______(顽固的)that nothing could change his decision.
72. I am not in favor of the idea that the pupil can use the _____(电子的)calculator in their study.
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