21-25 ABBDA 26-30 ADCAC 31-35 DCBBD

36- 40 CBBAA 41-45 CDADC 46-50 CDCBA 51-55 CDACA

56-60 CACBC 61-65 ACBAB 66-70 ABBCB 71-75 CABAB

76. pay后加 for 77. till → if 78. comfortable → comfortably 79. they → he 80.

that → as 81. 去掉the 82. therefore→ however 83. better → good 84. 去掉to 85. √

书面表达：

Great changes have taken place in the way of communication in people’s life in

recent years.

In the past, people kept in touch with each other mainly by writing letters or

using the public telephone. But now almost everyone has his own mobile phone.

People can communicate with each other almost at any place and at any time.

What’s more, people have easy access to the Internet, which enables them to send

and receive e-mails whenever they like.

With these changes, people’s pace of life has been quickened and people’s work

has been made more efficient. It used to take several days to hear from each

other, but now it takes only several minutes, even if they are in two different

continents. In a word, people have an easier life nowadays.

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