单选题 The major problem with E-mail is that it is (71) easy to use that people can become (72) with messages (73) they can possibly answer in a day. In addition, mail boxes require some management to (74) messages or archive those that might be required later. Senders don't always know about your E-mail backlog and often send (75) messages.

单选题 A. full B. lost C. inundated D. filled
【正确答案】 C
【答案解析】
单选题 A. too B. so C. very D. much
【正确答案】 B
【答案解析】
单选题 A. manage B. save C. backup D. dispose of
【正确答案】 D
【答案解析】
单选题 A. toomany B. redundant C. long D. trivial
【正确答案】 B
【答案解析】
单选题 A. more than B. than C. that D. which
【正确答案】 A
【答案解析】