问题 选择题

一个长方形的周长是30厘米,若长方形的一边用字母x(厘米)表示,则该长方形的面积是(  )

A.x(30-2x)平方厘米

B.x(30-x)平方厘米

C.x(15-x)平方厘米

D.x(15+x)平方厘米

答案

∵长方形的周长是30厘米,长方形的一边用为x厘米,

∴长方形的另一边是(15-x)厘米,

∴该长方形的面积是x(15-x)平方厘米;

故选C.

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选项。

     I was ten when I first sat with my grandmother behind the cashier (收银台) in her general store. 1_____

I quickly learned the importance of treating customers politely and saying "thank you". 

     At first I was paid in candy. 2_____ I worked every day after school, and during the summer and on

weekends and holidays from 8 a.m. to 7 p.m. My father helped me set up a bank account. 3_____ 

     By the time I was 12, my grandmother thought I had done such a good job that she promoted me to selling

cosmetics (化妆品). I developed the ability to look customers directly in the eye. Even though I was just a

kid, women would ask me such things as "What color do you think I should wear?" I took a real interest in

their questions and was able to translate what they wanted into makeup (化妆) ideas. 4_____

    The job taught me a valuable lesson: to be a successful salesperson, you didn't need to be a Rocket

scientist-you needed to be a great listener. 5_____ Expect they are no longer women purchasing cosmetics

from me; instead, they are kids who tell me which toys they would like to see designed and developed.

A. Later I received 50 cents an hour.

B. Before long, she let me sit there by myself.

C. I ended my selling a record amount of cosmetics.

D. Today I still carry that lesson with me: I listen to customers.

E. My grandma's trust taught me how to handle responsibility.

F. Soon I found myself looking more beautiful than ever before.

G. Watching my money grow was more rewarding than anything I could have bought.

问答题 简答题