问题 解答题

某校招生录取时,为了防止数据输入出错,a名学生的成绩数据分别由两位程序操作员各向计算机输入一遍,然后让计算机比较两人的输入是否一致,已知甲的输入速度是乙的2倍,结果甲比乙少用m小时输完,问:这两个操作员每分钟各能输人多少名学生的成绩?

答案

设乙每小时输x名学生成绩,根据题意,得

a
x
-
a
2x
=m,

解得x=

a
2m

经检验x=

a
2m
是原方程的解.

则甲每小时输2m名学生成绩;

答:甲每小时输2m名学生成绩,乙每小时输m名学生成绩.

阅读理解

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余项。

5 Things to Do in a Traffic Jam

Tired of traffic jams? Here are some tips that can help you to calm down in a traffic jam.

Listen to a CD audio book

It’s a good idea to keep several audio books in your car.    小题1:   Listening to an exciting story is more interesting than sitting silently and being bored.

Sing loudly

If you begin getting angry because of a long traffic jam, turn your CD player on or radio    up.  小题2:  Imagine you’re a wonderful singer and the audience is listening to you in admiration. Your stress will disappear.

  小题3:  

You can use the radio and play entertaining games while waiting. For example you can   guess the song or the singer or to see how quickly you can recognize a new song.

Have a snack(零食)

Keeping a tasty snack in the car is especially good for waiting in traffic jams. Choose what you like most of all, so you will look forward to traffic jams to have a chance to eat the delicious snack.   小题4:   In that case, time is the last thing to worry about.

Argue with the radio talk show host

Find a station with a radio talk show.   小题5: If you disagree, you can show your anger. Don’t be afraid to call their ideas stupid. Only make sure that the car windows are closed so no one may hear you.

Sitting in a traffic jam can be very stressful but next time you can use these simple tips, and you won’t notice how long you have been waiting and soon you will be on your way.

A.Play games

B.Use the radio.

C.Enjoy every bite of it.

D.Listen to their debates carefully.E. Loud singing can help to reduce stress.

F. Begin to enjoy them as quickly as you can.

G. The storyteller’s voice can clear all your bad emotions.

单项选择题