问题 选择题

一块完整的骨胳肌上没有的是(  )

A.成骨细胞

B.肌细胞

C.血管

D.神经

答案

我们身体上的每块肌肉都是一个器官,同身体中其他器官一样,它由几种组织构成.构成肌肉的基本组织有肌肉组织、结缔组织、神经组织,此外还分布有丰富的血管网.肌细胞是构成肌肉的基本单位,肌细胞即肌纤维,肌纤维是构成肌肉的主体,肌肉器官的绝大部分由肌纤维组成.从外表上看,每一块骨骼肌可分为肌腹和肌腱两部分;成骨细胞是骨形成的主要功能细胞,属于骨的结构,负责骨基质的合成、分泌和矿化.

故选:A

阅读理解

阅读下面短文和问题,根据短文内容,在答题纸相应题号后的横线上写下相关信息(不多于五个单词),完成该问题的回答。答语要结构正确,书写工整,字迹清楚。

These days, people are concerned about the growing number of kids who are overweight. The number of overweight kids has increased a lot over the last 30 years. Today, more than 15% of the kids aged 6 to 19 are overweight.

In a recent study in the USA, 1,168 boys and girls were asked about the problem. More than half of them said too many girls were overweight.

What does “Overweight” Mean?

Most people who are overweight have too much body fat. The person who is overweight weighs more than is healthy. Being overweight can lead to health problems, like heart disease. Overweight kids also may feel sad about the way they look. Sometimes they get laughed at by other kids and it is harder for overweight kids to make friends.

Why Are Some Kids Overweight?

When asked why some kids were overweight, many kids said it was because overweight kids didn’t exercise enough or eat right. Others said that kids were overweight because fast food restaurants serve the wrong foods or it’s a problem of genes.

How Are the Kids Trying to Lose Weight?

Plenty of kids said they have tried to lose weight and they have been trying to do the following:

● go on a diet – 17%

● eat healthy and exercise – 64%

● eat out less – 4%

● take medicine – 5%

It’s great that kids are thinking about weight problems and are trying to solve them. It’s like putting together a difficult puzzle. Understanding that there’s a problem is one piece. Understanding what causes kids to be overweight is another. And knowing that eating healthy and exercising are the best ways to fix the problem is a very important piece.

小题1:How do overweight kids feel about the way they look?

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小题2:Some kids have tried to lose weight. What have 64% of them been trying to do?

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小题3:What is the passage mainly about?

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单项选择题