題材: 計數(shù) 詞數(shù): 164 建議閱讀時間: 3.5分鐘
根據(jù)文意選出能填入空白處的最佳選項。
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.
生詞
match v. 相配,相稱:She wore a green silk dress and hat to match.她穿著一件綠絲裙,戴著與之相配的帽子。
numeral n. 數(shù)字:Roman numerals羅馬數(shù)字/Arabic numerals阿拉伯?dāng)?shù)字
stand for 代表,象征:The olive branch stands for peace.橄欖枝象征和平。
1.A.time B.a(chǎn)go C.before D.time before
2.A.numbers B.hands C.fingers D.feet
3.A.a(chǎn)ll hands B.both hands C.each hand D.either hand
4.A.up B.down C.a(chǎn)way D.a(chǎn)side
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
參考譯文
為什么我們以10為單位計數(shù)?原因在于我們有10個手指頭。很久以前,當(dāng)人們必須計算很多東西的數(shù)量時,他們就把這些東西和他們的手指一一對應(yīng)。首先,他們數(shù)出正好可以和兩手的10指相配的東西,并把它們放到一邊,這算一份。如果數(shù)量超過10個,他們就堆出更多的份數(shù)。我們把這種計數(shù)方法叫做“雙手?jǐn)?shù)”,因為它們是從用兩只手計數(shù)這一事實發(fā)展而來的。
有些人使用“單手?jǐn)?shù)”。因為一只手有5個手指,他們就用5為單位計數(shù)。兩千多年前生活在意大利的羅馬人使用的就是這種計數(shù)方法。我們把這種書面的數(shù)字叫做羅馬數(shù)字,即使在今天,我們?nèi)栽谑褂?。在羅馬數(shù)字中,“Ⅰ”代表1,而“Ⅴ”代表5。如果要表示6,羅馬人就寫“Ⅵ”。
有時候人們會以12為單位計數(shù)。今天我們在鐘表上表示時間時仍使用12為單位的計數(shù)系統(tǒng)。我們從1數(shù)到12小時,然后重新從1開始。
參考答案
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
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