试题与答案

用简便方法计算.443×35×51112×(13+14)57×613+713×5

题型:解答题

题目:

用简便方法计算.
44
3
×
3
5
×
5
11

12×(
1
3
+
1
4
)

5
7
×
6
13
+
7
13
×
5
7

31×
19
30

(
1
6
-
1
8
)×48

7
10
×11-
7
10

答案:

(1)

44
3
×
3
5
×
5
11

=

44
5
×
5
11

=4;

(2)12×(

1
3
+
1
4
),

=12×

1
3
+12×
1
4

=4+3,

=7;

(3)

5
7
×
6
13
+
7
13
×
5
7

=

5
7
×(
6
13
+
7
13
),

=

5
7
×1,

=

5
7

(4)31×

19
30

=(30+1)×

19
30

=30×

19
30
+1×
19
30

=19+

19
30

=19

19
30

(5)(

1
6
-
1
8
)×48,

=

1
6
×48-
1
8
×48,

=8-6,

=2;

(6)

7
10
×11-
7
10

=

7
10
×(11-1),

=

7
10
×10,

=7.

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E

Dear Sir/Madam,

I read Alison Burnham’s review of When We were 12, and I do not agree with her. I thought the programme was wonderful — I found the old news pictures really interesting — they helped to bring to life the stories the people were telling.

The programme reminds me of many things from my own childhood. For example, one day when I was about five, I was going to school on the bus by myself (this was the late 1960s). My mother had given me exactly the right money for a return ticket. I held out my hand with the money in it — one big coin on top of one little coin. The bus conductor took the big top coin only and she gave me a ticket, but it was a pink one for a single journey. I needed a white one for a return journey, but I was too frightened to say anything. When school finished for the day, I couldn’t catch the bus home — I had to walk. As a grown-up, whenever I’ve been in a situation where I need to say something or take some action, this early memory of my bus ride comes back to me, and I’m able to take control of the situation.

I would like to say to the director, Bret Chrysler, carry on making this kind of programme. Too much TV these days is quiz shows and so-called “reality programmes”. I appreciate the human story that can make me laugh and cry.

Chris Daniels

72. What is Chris Daniels’ purpose of writing this letter?

A. To persuade Bret Chrysler to turn away from quiz shows.

B. To entertain other readers with old news pictures.

C. To express his appreciation of the programme.

D. To have his story told on the programme.

73. Chris Daniels tells the story about the bus ticket to _____.

A. describe how painful his early experience was

B. draw a direct response from Alison Burnham

C. show how the programme made him think

D. teach the readers of TV Weekly a lesson

74. According to the passage, Chris Daniels had to walk home because _____.

A. he hadn’t got a return ticket                 B. he had lost his bus ticket

C. he didn’t like big crowds                   D. he missed the bus home

75. What does Chris Daniels now think about his experience on the bus?

A. He should have told the conductor then.     B. He should have been well treated.

C. He regrets going to school alone.             D. He wishes it hadn’t happened.

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