问题 解答题
随着通讯市场竞争的日益激烈,某通讯公司的手机市话收费按原标准每分钟降低了a元后,再次下调了25%,现在的收费标准是每分钟b元,则原收费标准每分钟为(  )元.
A.
5
4
b-a
B.
5
4
b+a
C.
4
3
b+a
D.
3
4
b+a
答案

设原收费标准每分钟为x元,

由题意得,(x-a)(1-25%)=b,

(x-a)×75%=b,

3
4
x-
3
4
a=b,

x=

4
3
b+a.

故选:C.

句型转换

将下列句子改为间接引语。

1. "Go to the front at once!" the officer said to the soldiers.

    ______________________________________________________________________________

2. The teacher said to his class, "Don't waste your time!"

    ______________________________________________________________________________

3. She said to her son, "Don't forget to turn off the light when you leave the room!"

    ______________________________________________________________________________

4. His father said to him, "Think before you do it!"

    ______________________________________________________________________________

5. The teacher said to his students, "Tell briefly in your own words how penicillin was discovered."

    ______________________________________________________________________________

6. The leader said to him, "Please write your report as soon as possible."

    ______________________________________________________________________________

7. He said to me, "Let me have a look at the book you bought."

    ______________________________________________________________________________

8. "Don't risk your lives, men!" the captain warned.

    ______________________________________________________________________________

9. She said to me, "Have lunch with us."

    ______________________________________________________________________________

10. "Be careful, and don't cut your finger," he said to me.

    ______________________________________________________________________________

多项选择题