高一英语阅读理解练习题(自然类)
[导读] n the table. You must use salt when you carry out this experiment.First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze again.After a minute or two you may raise the piece of string and with it you will raise your piece of ice!This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to
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(1)
Put an ice cube from your fridge into a glass of water. You have a piece of string(线) 10 centimeters long. The problem is to take out that piece of ice with the help of the string. But you must not touch the ice with your fingers.
You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.
First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze again.
After a minute or two you may raise the piece of string and with it you will raise your piece of ice!
This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don’t put enough salt, the water will freeze again.
1. We must use _______ when we carry out this experiment.
A. fridge B. some food C. a table D. some salt
2. How long will it take to carry out this experiment?
A. More than three minutes. B. Five minutes or so.
C. Only one minute or two. D. About ten minutes.
3. What is the task of this experiment?
A. Put the ice cube into the glass of water with the help of the string.
B. Take out the ice cube in the glass of water with the help of the string.
C. Take out the ice cube in the glass of water with your fingers.
D. Put some salt on the ice cube and then put the string across it.
4. How many things at least are used in this experiment?
A. Three. B. Four. C. Six. D. Seven.
5. We can learn something about _______ from the passage.
A. Physics B. biology C. chemistry D. maths www.i3xuexi.com
【答案与解析】本文讲述了把立方形的冰块放入水杯中，如何用细绳取出冰块的实验。
1. D。我们进行实验时必须用什么?文章第2段最后一句说当进行实验时你必须用salt(盐)。由此可知答案是D。
2. C。文章第4段的After a minute or two...(一两分钟后你可以提起细绳…)，由此可知进行这个实验仅需一两分钟时间。
3. B。这个实验的任务是什么呢?由文章第1段第3句The problem is to take out that piece of ice with the help of the string(问题是如何用细绳将冰块拿出)，由此可知答案为B。
4. B。实验中至少用了几样东西?从全文可知道至少用了string, salt, a glass of water, ice cube这4种东西。
5. C。通过这段文字我们了解了一些什么知识?实验用salt把ice融化，这应属于化学变化。
(2)
Bamboo is one of the nature’s most surprising plants. Many people call this plant a tree, but it is a kind of grass.
Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly. A Japanese scientist recorded one bamboo plant that grew almost 1.5 meters in 24 hours! Bamboo grows almost everywhere in the world except Europe. There are more than 1,000 kinds of bamboo that grow around the world on both mountains and plains(平原).
Not all bamboo looks the same. Some bamboo plants are very thin. They may only grow to be a few centimeters wide while others may grow to more than 30 centimeters across. This plant also comes in different colors, from yellow to black to green.
Many Asian countries have been using bamboo for hundreds of years. They often use bamboo for building new buildings. As a matter of fact, the cables(绳索) that hold up the hanging bridge across the Min River in Sichuan are made of bamboo. The bridge has been in use for more than 1,000 years, and is still holding strong. www.i3xuexi.com
In Africa, engineers are teaching poor farmers how to find water using bamboo. These African countries need cheap ways to find water because they have no money, and their fields often die from no rain and no water. It seems that bamboo is one of the best things they can use. Bamboo pipes and drills(钻) can help to make the poor thirsty fields to be watered.
1. How is bamboo like grass?
A. It is thin and easy to cut. B. It grows everywhere.
C. It grows quickly after its cut short. D. It is short and green.
2. The sentence “while others may grow to more than 30 centimeters across.” means “Some other bamboo plants may grow to be very _______.”
A. short B. strong C. thick D. tall
3. From the text we know ______.
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