28.You should be____ if you want to have more chances for making friends.

A. 　 he wishes to make full use of what he has learnt in school

B. 　 he wants to prove his independence

C. 　 he wishes to do the opposite of what his parents approve of

D. 　 he wants to show his love for his parents

A. 　 rude

B. 　 rough

C. 　 crude

D. 　 coarse

A. 　 Teenagers of 12 to 16 only need 4 to 7 hours’ sleep each day

B. 　 Few of the teenagers have electronic products in their bedrooms

C. 　 Teenagers spend too much time on electronic products

D. 　 Girls between 13 and 16 spend the least time on electronic products

A. 　 a great many

B. 　 plenty of

C. 　 a large number of

D. 　 a few

A. 　hidden or unexpected dangers

B. 　surprisingly good products

C. 　enjoyable benefits

D. 　overly expensive goods

A. 　 Routes

B. 　 Transportations

C. 　 Tickets

D. 　 Customs.

A. 　 a regular auction puts items on an auction site

B. 　 an Internet auction has a longer time limit

C. 　 bidders can make a bid after the stipulated time

D. 　 the payment and delivery after an Internet auction are done by mail

A. 　 破产

B. 　 损坏

C. 　 违反

D. 　 折断

A. 82101973

B. 83227232

C. 86103721

D. 86552545

A. 　 love

B. 　 financial concern

C. 　 their parents

D. 　 family background