19-Thursday 计数 164词
题材: 计数 词数: 164 建议阅读时间: 3.5分钟
根据文意选出能填入空白处的最佳选项。
Why do we count things in group of ten?The reason is that we have ten fingers.Long 1 ,when people had to count a lot of things,they matched them against their 2 .First they counted out enough objects to match the fingers of 3 and then put them 4 in one group. 5 there were more than ten,they formed more groups.We can call our numbers“two-handed numbers”,because they developed from the 6 that people counted things on two 7 .
Some people had“ 8 numbers”,too.Because there are five fingers on one hand,they counted things out in groups of five.It was 9 by Romans who lived in Italy over 2,000 years ago.We call their 10 numbers Roman numerals and we use them even today.In Roman numerals,“Ⅰ”stands for one,and“Ⅴ”stands for five. 11 six,the Romans wrote“Ⅵ”.
12 people counted objects in groups of 12.We 13 use the 12-in-one-group system for telling time with a clock.We count the 14 from one to twelve and then start 15 one again.
生词
match v. 相配,相称:She wore a green silk dress and hat to match.她穿着一件绿丝裙,戴着与之相配的帽子。
numeral n. 数字:Roman numerals罗马数字/Arabic numerals阿拉伯数字
stand for 代表,象征:The olive branch stands for peace.橄榄枝象征和平。
1.A.time B.ago C.before D.time before
2.A.numbers B.hands C.fingers D.feet
3.A.all hands B.both hands C.each hand D.either hand
4.A.up B.down C.away D.aside
5.A.If B.As C.Because D.Finally
6.A.idea B.rule C.fact D.reason
7.A.ways B.means C.groups D.hands
8.A.one-hand B.two-handed C.ten-in-all D.half
9.A.discovered B.made C.taken D.used
10.A.old B.written C.counting D.one-to-ten
11.A.Count B.Counting C.To count D.In order to write
12.A.Few B.Many C.Sometimes D.Very often
13.A.still B.seldom C.used to D.have stopped to
14.A.numbers B.hours C.minutes D.time
15.A.with B.by C.out D.them
参考译文
为什么我们以10为单位计数?原因在于我们有10个手指头。很久以前,当人们必须计算很多东西的数量时,他们就把这些东西和他们的手指一一对应。首先,他们数出正好可以和两手的10指相配的东西,并把它们放到一边,这算一份。如果数量超过10个,他们就堆出更多的份数。我们把这种计数方法叫做“双手数”,因为它们是从用两只手计数这一事实发展而来的。
有些人使用“单手数”。因为一只手有5个手指,他们就用5为单位计数。两千多年前生活在意大利的罗马人使用的就是这种计数方法。我们把这种书面的数字叫做罗马数字,即使在今天,我们仍在使用。在罗马数字中,“Ⅰ”代表1,而“Ⅴ”代表5。如果要表示6,罗马人就写“Ⅵ”。
有时候人们会以12为单位计数。今天我们在钟表上表示时间时仍使用12为单位的计数系统。我们从1数到12小时,然后重新从1开始。
参考答案
Thursday 1.B 2.C 3.B 4.D 5.A 6.C 7.D 8.A 9.D 10.B 11.D 12.C 13.A 14.B 15.A