Wisdom Plaza 智慧广场 Half sold and then add 10 liters, so now we have 28 liters in the bucket. 已经卖了一半又加上10升，现在桶里有28升。 How much raw soybean milk was in the bucket? 桶里原来有多少生豆浆？ Let's draw a picture to sort out the conditions and the problems. 我们画图来整理一下条件和问题。 Where do you start? 从哪儿开始想起呢？ Let's try to start with the results and see if we can figure it out. 我们试着从结果出发，倒着想看看能不能找到答案。 Start by sorting things out in the order in which they happened: 先按事情发生的顺序进行整理： The original? Litres, half sold, 10 litres added, now 28 litres. 原有？升，卖了一半，又加入10升，现有28升。 And then you do the calculation backwards. 再倒过来进行推算。 It is easier to find solutions to some problems by thinking about them. 有些问题倒着想，反而更容易找到解决的方法。 Unit six Enter the planetarium -- year, month, day 走进天文馆——年、月、日 Lesson One 第一课 At fifteen or ten o 'clock. 1.15：00是几时？ What other questions can you ask? 你还能提出什么问题？ What time is 15 o 'clock? 15：00是几时？ We're using 24 hours here. 这里用的是24时计时法。 Thirteen o 'clock is one in the afternoon, and twenty-four is twelve at night. 13时是下午1时，24时是夜里12时。 I know that 15:00 is 3:00 in the afternoon. 我知道15:00是下午3时。 Where else in your life have you seen 24 hours to show time? 生活中你还见过哪些地方用24时计时法来表示时间？ 3. How long is the planetarium open in a day? 1. 天文馆一天的开馆时间有多长？ I am painting a painting 我画一画。 I'll dial. 我拨一拨。 Let's Count 我算一算。 Lesson Two 第二课 It takes the earth about a year to make one revolution around the sun. 地球绕太阳公转一周的时间大约是一年。 The time it takes the moon to go around the earth is 12:44 minutes and 3 seconds on the 29th, which is about one month. 月亮绕地球一周的时间是29日12时44分3秒，约是一个月。 The earth rotates around the sun at the same time. It takes 23 hours, 56 minutes and 4 seconds to rotate on its axis, which is about 1 day. 地球绕太阳公转的同时也在自转，地球自转一周的时间是23小时56分4秒，大约是1日。 What questions can you ask? 你能提出什么问题？ 1. What do you know about year and month? 1. 关于年、月的知识你知道哪些呢？ I know there are 12 months in a year. 我知道一年有12个月。 There are 365 days in a year 一年有365天。 Let's have a look at the almanac card. 我们看看年历卡吧。 A year with 365 days is a normal year, and a year with 366 days is a leap year. 一年有365天的年份是平年，一年有366天的年份是闰年。 Gregorian calendar years are multiples of four, usually leap years. 公历年份是4的倍数的，一般是闰年。 Gregorian calendar years are full hundreds, and must be multiples of 400 for leap years. 公历年份是整百数的，必须是400的倍数才是闰年。 2. What do you know about Japan? 1. 你知道哪些有关日的知识。 Two revolutions of the hour hand make exactly one day. 时针走两圈正好是一日。 From zero today to zero tomorrow is a day, and a day is twenty-four. 从今天零时到明天零时正好是一日，一日是24时。 The unit of time larger than a year is also a century. Do you know what a century is? 比年大的时间单位还有世纪，你知道世纪是怎么回事吗？ |
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