Question

【題目】 Kids learn to count on their fingers, because they’re so, well, handy! And it makes sense ----most number systems originally developed as people counted using their fingers.

The counting system of native Greenlanders not only uses all ten fingers, but all ten toes as well! Here’s how it works. The Greenlandic word for the number seven translates as, “second hand, two.” That means you count five on the first hand and add two from the second, to make seven. After you run out of fingers, go for the toes. Thirteen translates as “first foot, three”. That means you add ten fingers plus three toes.

The counting system we use has a base of ten. Larger numbers are simply multiples of ten. For example, ten tens make one hundred. We’re so used to our base ten system that it may seem like the only possibility. But the Greenlandic number system has a base of twenty, and other have a base of five. Of all the number systems ever invented, five, ten, and twenty are the most common bases.

It’s no coincidence (巧合) that these bases match the number of fingers on one hand, or two hands, or all of our fingers and toes. The connection between fingers and counting is so close that several languages have just one word means both “hand” and the number five. Even in English, the word digit describes either a number or a finger. So if anyone teases(取笑) you for counting on your fingers, just tell them you find your digits quite handy!

【1】Kids learn to count on their fingers because they’re ________.

A.originalB.handyC.interestingD.difficult

【2】The native Greenlanders may use ________ if their fingers are not enough for counting.

A.toesB.stonesC.armsD.nothing else

【3】Which number translates as “second foot, one”? ________.

A.6B.11C.16D.21

【4】The writer mentioned all the following number systems except _______.

A.a base of 2.B.a base of 5C.a base of 10D.a base of 20

【5】What can we infer from the passage? ________

A.Greenlanders are much cleverer than others..

B.The connection between fingers and counting is a coincidence.

C.Digit means five and finger in English.

D.People with the number system of Base 5 probably used one hand to count in the past.

【6】What’s the best title for the passage? ________.

A.The magic of numbers

B.What can we learn from Greenlandrs’ way of counting?

C.It’s convenient to count using fingers

D.The fun of kids’ fingers

Answer 1

【答案】

【1】B

【2】A

【3】C

【4】A

【5】D

【6】B

【解析】

這篇短文主要介紹了孩子們用手指數(shù)數(shù)的道理。大多數(shù)數(shù)字系統(tǒng)最初是在人們用手指數(shù)數(shù)的時候發(fā)展起來的，作者以格林蘭人的數(shù)數(shù)方法為例給我們做了講解。

【1】細(xì)節(jié)理解題。根據(jù)Kids learn to count on their fingers, because they’re so, well, handy可知用手指數(shù)數(shù)非常方便，故選B。

【2】細(xì)節(jié)理解題。根據(jù)After you run out of fingers, go for the toes.可知手指用完，用腳趾，故選A。

【3】推理判斷題。根據(jù)The Greenlandic word for the number seven translates as, “second hand, two.” That means you count five on the first hand and add two from the second, to make seven. After you run out of fingers, go for the toes. Thirteen translates as “first foot, three”. That means you add ten fingers plus three toes.可知當(dāng)手指用完，用腳趾，“first foot, three”意為十個手指加三個腳趾，由此推斷“second foot, one”意為十個手指加第一只腳的腳趾，再加第二只腳的一個腳趾，所以為數(shù)字16，故選C。

【4】細(xì)節(jié)理解題。根據(jù)Of all the number systems ever invented, five, ten, and twenty are the most common bases.可知沒有提及二進制，故選A。

【5】推理判斷題。根據(jù)第二段介紹格林蘭人怎么用計數(shù)及后文But the Greenlandic number system has a base of twenty可知他們的二十進制使用兩只手的手指，兩只腳的腳趾數(shù)數(shù)，由此推斷五進制則是使用一只手的手指數(shù)數(shù)，故選D。

【6】標(biāo)題歸納題。根據(jù)短文主要以格林蘭人的數(shù)數(shù)方法為例給我們做講解，說明大多數(shù)數(shù)字系統(tǒng)最初是在人們用手指數(shù)數(shù)的時候發(fā)展起來，孩子們數(shù)數(shù)用手指是有道理的。故答案為B。