参考答案：

第一部分：

第一节：1-5 CABDC

第二节：6-10 ABDBC 11-15 BACDA 16-20 CDAAD

第三节：21-25 CBABD 26-30 DBACC 31-35 BACDA 36-40 CBDAC

第二部分：

第一节：41-45 CCADB 46-50 ACBBD 51-55 CDCAD 56-60 ABCDB

第二节：61-65 BGADE

第三部分：

第一节：66. accident 67. breathing 68. foolishly/stupidly 69. protect 70. delicious/tasty 71. geography 72. starved 73. bargain 74. improved/bettered

75. congratulations

第二节：

76、are--is 77、去掉far 78、正确 79、course--courses 80、去掉it

81、particular--particularly 82、that--if/whether 83、meet前加to

84、arrived--arrive 85、or--and

第三节：

One Possible Version

The summer holiday is corning. Our class have had a discussion about what to do during the holiday. Some are in favor of staying at home. They think it's both convenient and comfortable. What's more, they can save money for other purposes. But they will lose the chance of getting to know the outside world. However, others prefer to go out for traveling since it can increase their knowledge and broaden their horizons. But they will spend more money and meet some difficulties while traveling.

In my opinion, it would be much better to stay at home, for I can do what I like, such as reading books, watching TV, and helping my parents with the housework