X. Homework
1. Prepare for the exam.
2. Finish off the exercises in the workbook.
探究活动
读文谈感受
读下面关于时间的小资料，然后谈一谈自己的感受。
A punctual(守时的) person is in the habit of doing a thing at the proper time and is never late in keeping an appointment.
The unpunctual man, on the other hand, never does what he has to do at the proper time. He is always in a hurry and in the end loses both time and his good name. There is a proverb(谚语) which says, "Time flies never to be recalled(召回)." This is very true. A lost thing may be found again, but lost time can never be regained. Time is more valuable than material things. In fact time is life itself, and the unpunctual man is for ever wasting and mismanaging his most valuable asset(财产) as well as others'. The unpunctual man is always complaining that he finds no time to answer letters, or return calls or keep appointments promptly. But the man who really has a great deal to do is very careful of his time and seldom complains of want of it. He knows that he can not get through his immense amount of work unless he faithfully keeps every appointment promptly and deals with every piece of work when it has to be attended to.
用英语复述
读下面的小文章，试着用英语复述。
你旅行时在时间上会发生很多奇怪的事，因为地球分为24个时区，一区相差一小时。有些天可能多于或少于24小时，有些星期可能多于或少于7天。
上学期 Unit 12 Mainly revision由www.yf1234.com收集及整理,转载请说明出处www.yf1234.comwww.yf1234.com
如果你用五天时间横渡大西洋，你乘的船每天都进入一个不同的时区。你进入每一时区，时间就改变一小时。向西行，你把钟往后拨；向东行，则往前拨。你旅行的每一天都有25或23小时。
如果你乘船横渡太平洋，你就会越过国际日期变更线。根据协议，这是新一天开始的地方。你越过该线，就得把你的日历向后或向前改动一整天。向东行，今天变成了昨天；向西行，今天变成了明天！
参考答案：
Strange things happen to time when you travel, because the earth is divided into twenty-four time zones(时区), one hour apart. You can have days with more or fewer than twenty-four hours, and weeks with more or fewer than seven days.
If you make a five-day drip across the Atlantic Ocean(大西洋)，your ship enters a different time zone every day. As you enter each zone, the time changes one hour. Traveling west, you set your clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours.
If you travel by ship across the Pacific(太平洋)， you cross the international date line(国际日期变更线). By agreement, this is the point where a new day begins. When you cross the line, you change your calendar one full day, backward or forward. Traveling east, today becomes yesterday; traveling west, it is tomorrow!
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上学期 Unit 12 Mainly revision