问题 解答题

六•一期间,某超市发现“背佳”牌童衣平均每天可售出60件,每件盈利40元,为让利给顾客,超市决定采取适当的降价措施,扩大销量,增加盈利,减少库存,经市场调查发现,如果每件童衣降价5元,那么平均每天可多销售30件,想要平均每天在销售过程中在童衣上盈利3600元,那么童衣应降价多少?

答案

设童衣应降价x元,

依题意得

(40-x)(60+

x
5
×30)=3600

整理得x2-30x+200=0,

∴x1=10,x2=20,

而超市决定采取适当的降价措施,扩大销量,增加盈利,减少库存,

∴x=20.

答:在销售过程中童衣盈利3600元,应降价20元.

阅读理解

阅读理解。

     We provide summer English courses which are the best you can find. You will enjoy coming to Los

Angeles to learn about American culture and improve your English at the same time. The courses last for four,

six or eight weeks. They start at the beginning of July and August. Our teachers are well-trained and very

experienced. They teach English classes for four hours a day, You can choose between small groups of two

or three, or larger groups of up to 15. We provide weekly tests to see the progress you' re making with your

language skills of reading, writing, speaking and listening. We also provide books and other materials.

     As well as learning English, we want you to experience life in the USA. You live with an American family,

and you take part in American life. You have meals with an American family and do some activities with them,

too. For many of our students this is the most interesting part of the course. Many families create friendships

with the students which last a long time. Of course, if you prefer, we can arrange hotel accommodation.

     Of course, there are many things to do in Los Angeles. Every day we have activities which take place after

class. You can choose to take trips to Hollywood, Disneyland or the famous beaches around LA. You can also

go to various shopping centers, sports centers, movies and concerts. There are also weekend visits' organized

to San Francisco and other places of interest in California.

     We try to give our students the best possible experience of English and life in the USA. Just ask our

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     We hope that you'll enjoy a course with us, too. If you' re interested, please fill in our application form

where you will also find our list of prices.' The course must be paid for one month before it begins.

1. The shortest summer English course will last for _______.

A. two weeks

B. four weeks

C. six weeks

D. eight weeks

2. Which of the following is TRUE about the summer English courses?

A. The students have to take an entrance test.

B. Each class has two or three groups of students.

C. All the teachers are young but very experienced.

D. Tests will be provided regularly to see if students have made progress.

4. What is Paragraph 2 mainly about?

A. Accommodation and food.

B. Why the students enjoy themselves.

C. Sightseeing and other activities after class.

D. The most interesting part of the summer English courses.

4. If you want to take part in the course, you must _______ first.

A. pay for a one-month course

B. fill in the application form

C. choose an American family

D. learn about American culture

5. The passage is a _______.

A. guide to Los Angeles

B. description of life in Los Angeles

C. description often English course

D. newspaper article on language learning

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