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The National Day and the International Labour Day are great ________ in our country.
A. things B. incidents C. accidents D. events
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Recently the newspapers have reported several __________ of the coal mines happening in different provinces in China and the government has taken effective measures to stop such things.
A.accidents B.events C.happenings D.incidents
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阅读下面短文，掌握其大意，然后从各题所给的四个选项(A、B、C和D)中，选出最佳选项。
Most of us can remember the days when we didn't use e-mail as an everyday vehicle(工具) far communication. Slowly but surely, it crept(悄悄地移动) into 1 . E-mail is a 2 tool for college students at any level. It's available 24 hours a day, 7 days a week and 3 at holidays. Most universities assign students an account upon entrance, 4 there is usually not even an option involved(必要的选择).
You can do everything from consulting on homework and projects, 5 classmates, family and friends, and getting daily news services to 6 you informed of world 7 . But, what are the 8 .
E-mail can be e-jail. You might 9 hours writing and replying to e-mail 10 you should be busy with the books for an upcoming(即将来临的) exam. 11 , you might be signed up for so many daily services, 12 horoscopes, news services, or personals, that your mailbox is so 13 “junk mail,” that finding the 14 e-mails through your box might take hours.
If you're a student. 15 is precious. Create and organize your e-mail folders into important school-related mail, correspondence with friends and family, and a folder for jokes, horoscopes(占星术) and other news services. 16 put the mail into the proper folders first, and when you're finished, head for the important school-related folder first. Respond to the mast important e-mails first and, 17 you have time, you can get to the others.
18 your friends from forwarding those tiresome joke lists, sex quizzes, and chain mails. The minute you 19 you've got one, delete it 20 so you won't be tempted to read it.
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Most of us can remember the days when we didn't use e-mail as an everyday vehicle for communication. Slowly but surely, it crept into 1 . E-mail is a 2 tool for college students at any level. It's available 24 hours a day, 7 days a week and 3 at holidays. Most universities assign students an account upon entrance, 4 there is usually not even an option（选择）involved.
You can do everything from consulting on homework and projects, 5 classmates, family and friends, and getting daily news services to 6 you informed of world 7 . But, what are the 8 ?
E-mail can be e-jail. You might 9 hours writing and replying to e-mail 10 you should be busy with the books for an upcoming exam.
11 , you might be signed up for so many daily services, 12 horoscopes, news services, or personals, that your mailbox is so “junk mail,” that finding the 14 e-mails through your box might take hours.
If you're a student, 15 is precious. Create and organize your e-mail folders into important school-- related mail, correspondence with friends and family, and a folder for jokes, horoscopes and other news services. 16 put the mail into the proper folders first, and when you're finished, head for the important school related folder first. Respond to the most important e-mails first and, 17 you have time, you can get to the others.
18 your friends from forwarding those tiresome joke lists, sex quizzes, and chain mails. The minute you 19 you've got one, delete it
20 so you won't be tempted to read it.