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，从短文后各题所给的四个选项(A、B、C、D)中，选出可以填入空白处的最佳选项。
Mobile phones are everywhere. It seems that no one can   31   without one. Mobile phones are a great way to stay   32   with friends and family.    33   it is important to remember that there are certain   34    when you should not be using your phone, the most important of these being during   35  
There is no reason   36   you should feel the need to have your mobile phone during class. Aren't you at school to   37   ? If you are in class, you should not be   38   your friends text messages or taking phone calls.
In America students would never be   39   to use their mobile phones during class. If you were to send or   40   a text message you would probably be kicked out of class. It is OK to have your mobile phone with you, you just need to remember to turn it   41   . It is very disturbing to hear a lot of tones and   42   during class.
As a teacher in China, I have to deal with students   43   mobile phones everyday. I have told my class to turn off their phones,   44   many students do not listen. The desire to be connected all the time seems to be   45   than the desire to learn.
It's easy to understand why it is so tempting(诱惑人的）to have your phone on during class. It seems so   46   to just send a short text message; it's not   47 anyone, is it? But you may actually be hurting yourself when you do this. Sending a text message also   48   your attention away from what's   49   in class, you may miss   50   important. The next time you think about sending a message in class you should think again.
31. A. survive       B. act                C. study              D. peak
32. A. friendly       B. close              C. connected          D. natural
33. A. Instead       B. However            C. Sometimes         D. Finally
34. A. times         B. days               C. hours              D. weeks
35. A. shopping      B. meeting            C. rest               D. school
36. A. when         B. that              C. why               D. where
37. A. play          B. learn              C. help               D. fight
38. A. sending       B. writing            C. posting             D. retaining
39. A. hoped        B. wished           C. allowed            D. encouraged
40. A. keep         B. help               C. take                D. receive
41. A. on           B. in                C. out                 D. off
42. A. ringing       B. sound             C. voice                D. shouts
43. A. thinking      B. using              C. considering           D. bringing
44. A. and          B. so                C. but                 D. then
45. A. faster        B. stronger           C. lower                D. easier
46. A. cheap        B. hard             C. easy                 D. brave
47. A. hurting       B. meeting           C. knowing              D. killing
48. A. pays         B. puts               C. breaks               D. takes
49. A. coming on      B. going through     C. going on           D. coming by
50. A. everything      B. something        C. anything            D. nothing