42. According to the passage, what is the main cause of oil pollution?　

A. Oil ships which meet and strike each other.　

B. Oil poured at sea when the oil tanks are cleaned out.　

C. Oil coming out of the bottom of the sea.　

D. Oil from waste water and industrial waste.　

41. This passage is mainly about_________________.　

A. pollution in the oceans

B. the amounts of oil in the sea　

C. the amounts of poison in shell fish

D. oil pollution in the waters　

55.B。细节理解题。由倒数第二自然段可知。

54.A。推理判断题。文章最后四个自然段都是建议。

53.B。推理判断题。由文章第三自然段第一句话The card could be used only for shopping on-line.可知。

52.A。意义猜测题。根据上下文猜测词义。

51.B。主旨大意题。文章一开始就说了“The Internet has led to a huge increase in credit-card fraud.”。

55. You are shopping on the site: ,and you want to buy a TV set, what does this article suggest doing?

A. Order the TV set at once.　

B. Do not buy the TV set on this site.　

C. E-mail the site your credit-card information.　

D. Tell the site your password and buy the TV set for you.

[答案与解析]　 51-55 BABAB

54. How many pieces of advice does the passage give to you?　

A. Four.　 　　　 B. Three.　 　　　 C. Five.　　　 　　 D. Six.

53. How can the thieves get the information of the credit-card?　

A. The customers give them the information.　

B. The thieves steal the information from Web sites.　

C. The customers sell the information to them.　

D. Both A and B.