1--5? B A B C D?????? 6---10? B C C D B

11-15? B A B B D??? 16-20 D C D C A

21--22 A B???? 23--26 A B D A???????

27--30? B C C A?????? 31-35. B D D A C

36. more melatonin??? ????37. the calcium content???

38. The people/Those who are struggling to fall asleep at night.???

39. But now a study has found it really does help people nod off-if it is milked from a cow at night.???

40. 睡前攝入的脂肪越多，晚上身體的負(fù)擔(dān)就越大。

41. difficult??? 42. progress??? 43. of??? 44. best??? 45. it??? 46. fun???

47. Finally??? 48. reviewing??? 49. helpful??? 50. a

51. What day is it today????

52. Is there a large population in the town????

53. Don’t make noise in the library.???

54. What a nice city it is!???

55. Bob isn’t tall enough to reach the basket.

Mobile phones are widely used these days． More and more people use mobile phones to do different kinds of things， such as chatting and shopping． But they spend too much time on the mobile phones． More and more mobile phone freaks appear．

Not only the adults but also the children are members of them．I don't think it's normal． Watching mobile phones too much is bad for our eyes．We have little time to exercise．It's not good for our health．We pay more attention to it and it influences our study and lives． We have less and less time to communicate with others．

In my opinion，we can do something meaningful instead of playing with the mobile phones all the time． Reading， exercising， visiting friends and communicating with family are also good ways to spend your free time．

I hope people can use the mobile phones correctly．

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