问题 单项选择题

下列4条叙述中,正确的一条是

A.二进制正数原码的补码就是原码本身

B.所有十进制小数都能准确地转换为有限位的二进制小数

C.存储器中存储的信息即使断电也不会丢失

D.汉字的机内码就是汉字的输入码

答案

参考答案:A

解析: 开非所有的小数都能转成二进制;内存中的信息一旦断电就会消失;汉字的机内码是内码,输入码是外码。

选择题
阅读理解

阅读理解

     Singles Day falls on every November 11th, and as the name indicates, this relatively new holiday is

one exclusively for people who are still living the single life. I was a bit surprised when I googled "Singles

Day" on the Internet, to find that China is the only country in the world that has set aside a special day for

singles to celebrate their lives. To find out more about this celebration, please read on.

      An old story goes that once there were four single men, leading very boring lives. None of them were married, or had lovers, or did anything exciting. They just sat around all day and played Mahjong.

     One day they played Mahjong from 11 in the morning until 11 at night. During the game, no matter

who won, the winning card was always the "four columns" card (the card shows four independent,

parallel columns in two lines). Even more of a coincidence, it was Nov 11, or 11/11. In order to

commemorate the day, they nicknamed it Singles Day.

     Singles Day was first celebrated at various universities in Nanjing, capital city of Jiangsu Province

during the 1990s. It got the name Singles Day because the date consists of four "ones". These college

students have since graduated, and carried their university tradition into society. Singles Day is now a

special day for all fashionable youths.

     The main way to celebrate Singles Day is to have dinner with your single friends, but it's important

that each person pay their own fee to show their independence. People also hold "blind date" parties in

an attempt to say goodbye to their single lives.

     Many singles also choose to say goodbye to their single lives on this day. Many attend "blind date"

parties and many people choose to marry on this day. In addition to meaning "single" the four "ones" of

the date can also mean "only one" as in "the only one for me." Some people will use this date and this

meaning to tell their special someone that they are the only "one" in their heart.

1.Singles Day got its name because _______.

A. the persons who play Mahjong are four singles

B. the date consists of four "ones"

C. only single persons celebrate the day

D. it was first celebrated at universities in Nanjing

2.Which of the following is wrong?

A. Singles Day was first celebrated in Nanjing's universities.

B. Many singles choose Singles Day to say goodbye to their single lives.

C. The only way to celebrate the Singles Day is to have dinner with your single friends.

D. It was these college graduated students that carried their university's tradition into society.

3.We can infer from the passage that ______.

A. the four singles did not get married

B. Singles Day receives great popularity among young people

C. when having dinner, one pays the fee for all his friends

D. on Singles Day many attend parties where blind people were present

4.What is the best title for the passage?

A. The Origin of Singles Day.    

B. How to Celebrate Singles Day.

C. Singles Day.                

D. Say Goodbye to Singles Day.