根据短文内容，从A，B，C，D四个选项中选出一个能正确填入相应空格内的最佳选项，并把答题卡上对应题目的答案标号涂黑。

Raising virtual(虚拟) pets is a popular online game among teenagers. “More than 20 of my classmates have adopted(领养) pets online,　　 42　　 last year the number was just 10,” said Wang, a 15-year-old student.

If you go to some websites, you can adopt virtual pets like penguins, chickens, dogs and elephants. You can feed, wash, talk 　　43　　 　and play with your pet. Dai Yingshuang of Chongqing 　　44　　 　. She said it was great 　　45　　 . She thinks that by looking after her pet she has also learned how to 　　46　　 others.

But raising an online pet means one needs to 　　47 　　a lot of time online. If one doesn’t feed and look after the pet, it becomes unhappy and unhealthy. There are　 　　48　　 　things an online carer must do. Some parents feel 　　49　　 . They are afraid that their children may be neglecting(忽视) their studies.

Wang Zhaotong of Anhui, since last year. The 14-year-old takes good care of the penguin, which is 　　50　　 　healthy and happy. She said her parents knew about the penguin and think it’s okay. “They believe I can keep the balance between studying and playing,” said Wang. “During the school period, I 　　51　　 　go online and see my penguin at the weekends.”

42. A．but　　　　　　 　　 B．when　　　 　　　　　 C．or　　　 　　　 D．then

43. A．about　　　 　　　　　　 B．to　　　　 　　　　　 C．of　 　　　　　　 D．over

44. A．buys　　　　 　　　　　 B．raises　　 　　　　　　 C．borrows　 　　 D．wants

45. A．fun　　　　　 　　　 B．funny　　　 　　　　 C．boring　　 　　 D．frustrating

46. A．stay with　　　 　　　　　　　 B．take care of　 　　　　 C．take care　　 　 D．get on with

47. A．take　　　　　 　　　 B．pay　　　　　 　　　 C．spend　　　 　　 D．cost

48. A．the other　　　 　　　 B．many other　　 　　　 C．the others　 　　 D．others

49. A．worried　　　　 　　 B．happy　　　　　 　　 C．tired　　　 　　　 D．sad　

50. A．neither　　　　　 　　 B．nor　　　　　 　　　 C．both　　　 　　 D．either

51. A．also　　　　　　 　　 B．only　　　　　 　　 C．always　　　 　 D．never

41. I was not quite sure __________.

A．what is she looking for　　　　　　　　　　　　　　 B．why she came late for school

　 C．how did she deal with the problem　　　　　　 D．if she has arrived

40. -Haven’t you been to Province?

　 -__________, but I will go there with my boyfriend one day.

　 A．No, I haven’t　 　 B．No, I have　　 　　　 C．Yes, I have　　 　　 D．Yes, I haven’t

39. I often see my mother __________ chess with my father after supper.

A．to play　　　　　　　 B．played　　　　　　　　　　 C．play　　　　　　　　　　　　 D．playing

38. The chair _____ hard and cold.

　 A．is felt　　　 　　　 B．is feeling　　　 　　　 C．feel　　　　　 　　　 D．feels

37. If you don’t know how to use the word, you should _________ in a dictionary.

　 A．look up it　　 　　 B．look it up　　　 　　 C．look them up　　 　　 D．look up them

36. My grandmother _________ a good memory, but now she always forgets things.　

A．used to have　　　　　 　　　　　　　　　　 B．used to having

C．were used to have　　　 　　　　　　　　　 D．are used to having

35. Tom, _________ afraid of speaking in front of people. You are the best one.

A．don’t　　　 　 B．not　　　　　　 　 C．not be　　　　　 　 D．don’t be