问题 解答题
一项工程,甲、乙两人合做6天完成,甲独做10天完成.现甲独做若干天后,由乙接替甲将剩余的部分完成,这样两人共用了 12
1
2
天,问甲、乙两人各做几天?.
答案

1
6
-
1
10
=
1
15

乙做天数为:(

1
10
×12
1
2
-1)÷(
1
10
-
1
15
),

=(1

1
4
-1)÷(
1
10
-
1
15
),

=

1
4
÷
1
30

=7

1
2
(天);

甲做天数为12

1
2
-7
1
2
=5(天).

答:甲做了5天,乙做了7

1
2
天.

阅读理解

阅读理解。

Dear Alice,

     Thank you for your last letter. I like reading it very much.

     Thank you for telling me about your school life. In this letter I'll tell you about my life.

     My day starts at 6:30 am. I get up and run before breakfast. I only have a small breakfast.  I can't eat much in the morning-just a piece of bread and a cup of coffee. At 7:00 I take a bus and get to school at

half past seven. I study five days a week, from Monday to Friday. I'm very busy every day. I have seven

classes, four in the morning and three in the afternoon. I study sci- ence, biology, math, French, English,

music, P.E. ,art and American history.  I like French and eat lunch in the dining room of our school.  I like all my teachers.  They are very kind, but our P. E. teacher is a little strict. Sometimes he makes us tired.

Classes are over at 4:30. Then I do my homework. On weekends I join a music club. I play the drums in

a rock band. I think it's really interesting.

                                                                                                                                                  Love,

                                                                                                                                                 Mary

1. Who writes this letter?

A. Alice.

B. Mary.

C. Alice and Mary.

D. Mary's cousin.

2. What time does Mary get up?

A. At 6:00 am.

B. At 6:30 am.

C. At 7:00 am.

D. At 7:30 am.

3. How many classes does Mary have in the afternoon?

A. Seven.

B. Four.

C. Eleven.

D. Three.

4. What's Mary's favorite subject?

A. Math and French.

B. American history.

C. Music.

D. French and Music.

5. Where does Mary have lunch?

A. At home.

B. At school.

C. At work.

D. In a shop.

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