阅读理解。 When we have small cuts in the skin (皮肤), something strange may

题文

阅读理解。     When we have small cuts in the skin (皮肤), something strange may happen.The cuts are able to heal
(痊愈) themselves in a couple of days. How does this happen? Read on, and you will find out the secret.
     Every living thing on the earth is made up of cells (细胞). Cells grow and make new cells. Most cells
are very tiny and we can't see them with our eyes. Different cells have different uses. Our skin cells are
special ones.The cells on the surface (表面) of our skin are old dead cells. New skin cells are right under
the surface. These are the living skin cells. They do work for our bodies. They help protect our bodies
and heal cuts. 
     Our bodies make skin cells all the time. As the old cells fall off, new cells grow in the same place. Each
person makes about 18 kg of skin cells during his or her life.Surface skin cells fit together closely with no
gaps between them. When you cut or bum yourself, you can harm your skin cells. A small cut will not do
much harm. Your skin will quickly heal itself by making new skin cells. How do skin cells work? First, the
cells near the cut get bigger and move into the gap. Next, these bigger cells meet in the middle. They form
a new layer (层) of skin cells. Finally, new cells will grow until the gap disappears completely. In this way,
your skin can grow and get well itself.
    How amazing the tiny cells are! Next time you have a cut, don't worry about it.Maybe in a few days, you will be surprised to find it healed. 1. The underlined word "gaps" in the passage means "______" in Chinese.

[     ]

A.突起
B.条纹
C.缝隙 2. From the passage, we know that cells ______.

[     ]

A.are large and we call see them with our eyes
B.can grow and make new cells
C.aren't in most living things 3. Skin cells heal cuts in three steps.______ is the right order. 
    

 

 


                 a                         b                         c

[     ]

A.a→b→c
B.b→c→a
C.a→c→b 4. Which of the following is TRUE according to the passage?

[     ]

A.Each person can make 18 kg of skin cells every day.
B.Different cells have different uses in our bodies.
C.The skin cells have little work to do in the body. 5. The best title for this passage should be ______.

[     ]

A.HOW SKIN CELLS HEAL CUTS
B.THE IMPORTANCE OF SKIN
C.HOW TO PROTECT OUR FINGERS

题型：未知 难度：其他题型

答案

1-5: CBBBA

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考点

据考高分专家说，试题“阅读理解。 When.....”主要考查你对 [科教类阅读 ]考点的理解。

科教类阅读

科普类的阅读：
科普类的阅读理解包含介绍科学知识、社会知识的短文。阅读这类短文时，要以事实为中心进行思考，抓住事物的特征、用途、相互关系等。
如果是介绍社会现象的文章，要掌握所谈现象的内涵。

答题技巧：
1. 加强整体意识，把握文章的主要内容。在阅读的时候可给段落标上序号，并给重要的句子和
   关键词做上记号，尤其是各段中心句，为答题提供更快捷更多的信息源。
2. 审清题干，发觉和把握试题中有效的提示性信息，确认命题的角度、阅读范围和答题方式。
3. 定位阅读，强化对应意识。同时要注意原文利用和自我加工相结合。