Question

【題目】 Have you ever counted the number of digits (數(shù)字) in your mobile phone number? Your number has 11 digits. You may sometimes find it hard to remember your number. 【1】 Why is that?

The 11 digits can be divided into three parts. 【2】 The first three numbers tell you which mobile phone service provider you are using. For example, 135 is for the China Mobile Communication Corporation and 188 is for China Unicom. The fourth to the seventh digits tell you which area the number is recorded in. And the last four digits are random (隨機). 【3】. We once had 10 numbers. But as our population grew, there were not enough numbers for us to use. So we began to use 11 digits from 1999.

Eleven digits can be used to make tens of billions of mobile phone numbers, according to the Xinhua News Agency. That’s enough for each person to have seven or eight phone numbers in China. 【4】 Usually, the service provider will reuse a canceled(取消的) number after three to six months. If you call a number that you haven’t contacted(聯(lián)絡(luò)) for a long time, you may find that its owner has changed.

Besides China, Britain and Japan also use 11-digit mobile phone numbers. But their numbers always start with 0. 【5】 Countries like the United States, Australia and India use phone numbers with 10 digits. Canada’s mobile phone numbers are perhaps the world’s shortest: they use seven digits.

根據(jù)材料內(nèi)容，從下面五個選項中選出能填入文中空缺處的最佳選項，使短文意思通順。

A.Each part has a different meaning.

B.So they can't create as many numbers as we can.

C.That’s because China has the longest mobile phone numbers in the world.

D.Also, mobile phone numbers can be recycled.

E.The main reason for using 11 digits is that we have the largest population in the world.

Answer 1

【答案】

【1】C

【2】A

【3】E

【4】D

【5】B

【解析】

本文是一篇說明文，主要介紹了熟記電話號碼的步驟，同時也簡單介紹了不同國家使用移動號碼的差異。

【1】句意：那是因為中國擁有世界上最長的手機號碼。

根據(jù)“Your number has 11 digits. You may sometimes find it hard to remember your number.”你的號碼有11位數(shù)字。有時你會發(fā)現(xiàn)很難記住自己的電話號碼。可知備選句子That’s because China has the longest mobile phone numbers in the world.解釋了原因，故選C。

【2】句意：每個部分都有不同的含義。

根據(jù)“The 11 digits can be divided into three parts.”11位數(shù)字可以分成三部分。以及下文對移動和聯(lián)通的舉例，可知備選句子Each part has a different meaning.符合題意，故選A。

【3】句意：使用11位數(shù)的主要原因是我們擁有世界上最多的人口。

根據(jù)“We once had 10 numbers. But as our population grew, there were not enough numbers for us to use. So we began to use 11 digits from 1999.”我們曾經(jīng)用10位數(shù)字。但是隨著人口的增長，沒有足夠的數(shù)量供我們使用。所以我們從1999年開始使用11位數(shù)字。解釋了增加數(shù)位的原因，故備選句子The main reason for using 11 digits is that we have the largest population in the world. 符合題意，E。

【4】句意：此外，手機號碼也可以回收利用。

根據(jù)“Usually, the service provider will reuse a canceled(取消的) number after three to six months.”通常，服務(wù)商會在三到六個月之后再次使用一個被取消的號碼�？芍�討論的是號碼回收問題。備選句子中Also, mobile phone numbers can be recycled.符合題意，故選D。

【5】句意：所以他們不能創(chuàng)造出像我們一樣多的數(shù)字。

根據(jù)“Countries like the United States, Australia and India use phone numbers with 10 digits.”美國、澳大利亞和印度等國家使用10位數(shù)的電話號碼�？芍�舉例的都是不到11位的電話號碼�？芍獋溥x句子So they can't create as many numbers as we can.符合題意，故選B。