问题 不定项选择

如图甲所示,光滑导轨水平放置在与水平方向夹角60°斜向下的匀强磁场中,匀强磁场的磁感应强度B随时间的变化规律如图乙所示(规定斜向下为正方向),导体棒ab垂直导轨放置,除电阻R的阻值外,其余电阻不计,导体棒ab在水平外力作用下始终处于静止状态。规定a→b的方向为电流的正方向,水平向右的方向为外力的正方向,则在0~t时间内,能正确反映流过导体棒ab的电流i和导体棒ab所受水平外力F随时间t变化的图象是

[ ]

A.

B.

C.

D.

答案

答案:D

单项选择题
完形填空

第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,掌握其大意,然后从16-35各题所给的A、B、C、D四个选项中,选出最佳选项。

第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,掌握其大意,然后从16-35各题所给的A、B、C、D四个选项中,选出最佳选项。

It was 4 o’clock in the morning, when I received the phone call.

“This is the emergency room calling and your son was just   16   in with severe burns on his face, neck and arms. We have called for a(n)   17   and are going to fly him to the burn unit in Seattle.” Seattle was 350 miles from his college, so we knew immediately this was   18  .

The doctor described the   19  , which caused the burns. At 6 a.m, our son and his friends decided to barbecue hamburgers in the courtyard of their apartment. When they   20   the charcoal(木炭), it burst into flames because they had sprayed too much gasoline(petrol). The flames    21   my son’s shirt tail and shot from his waist to well over his head.

22  , one of the boys was quick-minded, grasped my son, and   23   him on the grass. While it saved his life, it was not in   24   to save him from severe burns and the terrible scars(伤疤).

After he   25   from the treatments, the doctors told him they would not do plastic surgery(整容)for 6 months   26   it takes that long for the skin to stop shrinking and wrinkling. So, he had to return to college with scars typical of severe burns.

When I was a child, my mother told my sister, who had a 10-inch very   27   scar on her arm, “Nancy, if you ignore the scar, other people will ignore it. It does not mean they will not   28   it, but it means it will not matter to them if it doesn’t matter to you.”

I   29   this wisdom on to my son. He took my advice to   30   and returned to school with his head held high--- glad he was alive.

By the end of the six-month waiting period, he decided that the scars did not   31  , so he made the   32   to give up any plastic surgery we all have “scars” that we believe   33   people to keep away from us. And we spend a lot of time thinking that if only we looked differently, or dressed differently, people would like us better.

But you see, people will only judge you by your looks, or your clothes, if you are judging yourself by these same   34   standards. Put your imperfections out of your mind and concentrate on what you value   35    yourself, and your beauty will shine through.

16. A. brought        B. given               C. turned              D. showed

17. A. doctor         B. hospital       C. aircraft              D. ambulance

18. A. serious         B. terrible       C. dangerous           D. important

19. A. event          B. process       C. reason              D. accident

20. A. got            B. lit            C. burned          D. moved

21. A. took           B. held             C. caught           D. attracted

22. A. Fortunately      B. Surprisingly   C. Happily             D. Slowly

23. A. pushed         B. threw         C. dropped            D. rolled

24. A. shape           B. place         C. fact                D. time

25. A. benefited        B. recovered      C. suffered             D. relaxed

26. A. if                   B. while               C. because             D. although

27. A. normal        B. violent              C. obvious             D. popular

28. A. mention         B notice         C. 1augh              D. hide

29. A. sent           B. kept          C. handed                 D. passed

30. A. heart           B. life           C. practice             D. considerate

31. A. grow          B. matter         C. exist               D. appear

32. A. mistake        B. effort          C. decision           D. request

33. A. invite          B. cause          C. allow             D. remind

34. A. false          B. strict          C. moral             D. general

35. A by              B. over           C. beyond          D. within