问题 解答题

体积相等的长方体,表面积一定相等.______.

答案

长5厘米、宽4厘米、高3厘米长方体的体积是:

5×4×3=60(立方厘米),

长5厘米、宽4厘米、高3厘米的长方体的表面积是:

(5×4+5×3+4×3)×2,

=(20+15+12)×2,

=47×2,

=94( 平方厘米).

长12厘米,宽是5厘米,高是1厘米的长方体的体积是:

12×5×1=60(立方厘米),

长12厘米,宽是5厘米,高是1厘米的长方体的表面积是:

(12×5+5×1+12×1)×2,

=(60+5+12)×2,

=77×2,

=154( 平方厘米).

它们的体积相等,表面积不相等.

故答案为:错误.

多项选择题
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Reading comprehension.

     Students often meet with questions as follows: bullied by someone, worried about a weak subject, puzzled

by family problems or concerned about pets at home. All the questions above may make you not concentrated

on your study. Who can you turn to if you are such an unlucky student? A great person to share your thoughts

and feelings with is your school counselor (顾问).

     Add school counselors to the list of people you can turn to when you need help. They know how to listen

and can help kids with life's challenges (挑战). Counselors have special training in how to help kids solve

problems, make decisions, and stand up for themselves. That doesn't mean your counselor will wave a magic

wand and the problem will go away. But it does mean he or she will help you cope with it. Coping is an

important word to know. Sometimes, kids and grown-ups have difficult problems. Coping means that someone

is trying to handle these problems and make things better.

     Your school counselor is available for you and wants to make your school experience the best it can be. The

counselor's job is to take your problem seriously and help you find a solution. The counselor also wants to help

you learn as much as you can in class, be a contributing member of the school community, and be a positive

influence on your environment.

1. From the underlined sentence we may infer that ______.[ ]

A. a school counselor is one of those who can help you

B. school counselors are those you can make friends with

C. one needs various people to help him or her

D. one has to know and deal with all kinds of people at school

2. According to the passage, which of the following happens that you may not turn to the counselors? [ ]

A. Other students treat you cruelly.

B. You are too poor to go to school.

C. You are weak in one subject.

D. You have family problem.

3. What does the writer think of the school counselors?[ ]

A. They can solve any questions you meet with.

B. They can help students get their life or study improved.

C. They are as important as teachers in schools.

D. They may punish those who have bullied you.

4. Which of the following may be the best title of the passage?[ ]

A. School counselors

B. School problems

C. Students' problems

D. Free counselors