Most of us can remember the days when we didn’t use E-mail as an everyday vehicle(传媒)for communication. Slowly but surely, it poured into 　21　 　. E-mail is a 　22　 　tool for college students at any level.

　 It’s available 24 hours a day, 7days a week and 　23　 　at holidays. Most universities assign students an account upon entrance, 　24　 　there is usually not even an option (选择)

You can do everything from consulting on homework and projects, 　25　 　classmates, family and friends, and getting daily news services to 　26　 　you informed of the world 　27　 . But, what are the 　28　 ？

E-mail can be E-jail(监狱). You might 　29　 　hours writing and replying to E-mail 　30　 you should be busy with the books for an upcoming exam. 　31　 , you might be signed up for so many daily services, 　32　 　horoscope(算命术 ), news services, or personals, that your mailbox is so 　33　 　“junk mail”, that finding the 　34　 　E-mail through your box might take hours.

If you are a student, 　35　 　is preciout. Create and organize your E-mail folders(文件夹)into important school-related mail, correspondence(通信)with friends and family, and a folder for jokes, horoscopes and other news services. 　36　 　put the mail into the proper folders first, and when you’ve finished, head for the important E-mail first and, 　37　 　you have time, you can get to the others.

　 38　 　your friends from forwarding those tiresome joke lists, sex quizzes, and chain mails. The moment you 　39　 　you’ve got one, delete it 　40　 　so you won’t be tempted to read it.

20. Mother would rather buy 　　　　　these apples than get 　　　　　bananas.

A. three dozen of; scores of　　　 B. three dozen; scores of

C. three dozen of; score　　　　　 D. three dozens of; score of

19. The old woman became aware of 　　　　　when she left the market.

A. cheating　　　 B. cheated　 C. being cheated　　 D. to be cheated

18. The man insisted 　　　　　a taxi for me even though I told him I lives nearby.

A. find　　 B. to find　　 C. on finding　　 D. in finding

17. The hero’s story 　　　　　differently in the newspapers.

A. was reported　 B. was reporting　 C. reports　　 D. reported

16. More and more people are signing up for Yoga classes nowadays, 　　　　　advantage of the health and relaxtion benefits.

A. taking　　 B. taken　 C. having taken　 D. having been taken

15. They were wild with joy when they 　　　　　Chinese soil in late February.

A. set foot in　　 B. set foot on　　 C. step　　 D. walk

14. I keep medicines on the top shelf, out of the children’s 　　　　.

A. reach　　 B. hand　　 C. hold　　 D. place