2.已知向量和向量的夹角为，，则向量和向量的数量积　 ★　 .

[答案]3

[解析]。

1.若复数，其中是虚数单位，则复数的实部为★.

[答案]

[解析]略

请你根据下面提示起草一篇欢送Tom回国的短文。

汤姆三年前随父母来到西安，在你班学习，在这段时间里，你们互相帮助，相处得很好。由于他的到来，许多同学对英语更感兴趣，并在英语学习上取得很大进步。现在汤姆就要随父母回国了，你们准备为他举行欢送会，请你代表全班起草一篇欢送他回国的短文，向汤姆告别，希望他回国后经常给同学们写信保持联系，并希望他有机会再到中国来。

注意：字数(100左右)

(欢送词的开头已为你写好)

Today we are having a party to honour our friend Tom, who is returning to his own country with his parents.

　 Dear Editor,

　 In order to keep my parents happy, I never went to　　　　　　　 61.__________

Internet bars, dancing halls or other crowding　　　　 　　　　　　62.____________

place. I like reading books or doing my homework　　　　　　　　 63.____________

at home while listening to music. But when during　　　　　　　　 64._____________　

every winter holiday, my home becomes a playroom.　　　　　　 　65._____________

Many relatives gather here play cards. I am　　　　　　　　　　　 66._____________

very tired of the noise the game makes, so my　　　　　　　　　　 67._____________

parents enjoy it. How I hope at a quiet place to　　　　　　　　　　 68._____________

read books or learn something that they cannot get　　　　　　　　 69______________

at school without disturbed！Please help me!　　　　　　　　　　 70._____________

　　　　　　　　　　　　　 Yours,

　　　　　　　　　　　　　 Li Hua

60. The specialist didn’t make any ______ (评论) about your article.

59. ______ (有机) farming is becoming more and more popular now.

58. The smooth ______ (流通) of goods shows the normal development of economy.

57. It seemed as if the girl was ______ (迷惑) by her teachers question.

56. Our school has been developing very fast in last ______ (十年).

55. The postman ______ (投递) our letters and newspapers for us every day.