题目
题型：不详难度：来源：
Some birds like eating locusts. but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color as crops have. Some other pests with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.
If you study the animal life, you"ll find the main use of coloring is protecting themselves. Bears, lions and other animals move quietly through forests. They cannot be seen by hunters. This is because they have the colors much like the tree.
Have you ever noticed an even more strange act? A kind of fish in the sea can send out a kind of very black liquid when it faces danger. While the liquid spread over, the enemies cannot find it. And it immediately swims away. So it has lived up to now though it isn"t strong at all.
根据短文内容, 指出能完成所给句子或回答所提问题的最佳答案。
小题1:From the passage we learn that locusts ___ .
| A．are small animals |
| B．are easily found by birds |
| C．are dangerous to their enemies |
| D．change their colors to protect themselves |
| A．have the colors much like the trees |
| B．move quickly |
| C．like brown and grey colors |
| D．live in forests |
| A．it is very big and strong |
| B．the liquid it sends out help it escape from its enemies |
| C．the liquid it sends out can kill its enemies |
| D．it swims faster than any other fish |
| A．The Change of Colors for Animals and Pests |
| B．Colors of Different Animals and Pests |
| C．The Main Use of Colors for Animals and Pests |
| D．Some Animals and Pests |
答案
小题1:D
小题2:A
小题3:B
小题4:C
解析
试题分析：这篇文章讲述了不同的动物和害虫都会有着和环境相似的颜色，这些颜色主要是用来保护它们自己不受到伤害。
小题1:细节题。根据文章Some birds like eating locusts. but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops.蝗虫能够随着农作物的颜色的变化而改变自己的颜色，这样就可以保护自己不被鸟类吃掉。故选D
小题2:细节题。根据文章This is because they have the colors much like the tree.可知，那是因为熊和狮子有着和树木很想象的颜色。故选A
小题3:细节题。根据文章A kind of fish in the sea can send out a kind of very black liquid when it faces danger.有一种鱼当它遇到危险是，就会发射出一种黑色的液体。故选B
小题4:主旨题。这篇文章讲述了不同的动物和害虫都有着自己特殊的颜色，这些颜色主要就是用来保护自己远离危险。故本题选C
点评：本文的思路清晰，结构明确。首先对作者所说明的事物进行理解。本文细节题很多，对于细节题，学生在理解全文的基础上要对题目中关键字在文章中迅速定位，找到相对应的出处，答题比较备选答案的区别及和文章信息最相关的是哪个，即那个就为正确答案。
核心考点
试题【Do you know why different animals or pests have their special colors? Colors in 】；主要考察你对科普环保类等知识点的理解。[详细]
举一反三
During your teenage years, it is important to give your body the energy it needs. If you skip (跳过) meals, you won’t get enough calories, and then you will feel tired. By the way, calorie is just another word for energy. About 50% of your calories should come from rice, bread, vegetables and fruit. You also need to drink a lot of water, 6 to 8 glasses a day. Water helps keep your system clean. Drinking enough water will make your skin better and make you healthy.
Exercise is something that can help to make you look good, feel good and be healthy. Experts suggest that teenagers spend at least 30 minutes exercising a day, five times a week. That is easy to do! You can walk or ride your bike to school, and do sports at school. However, teenagers often give up sports, saying they have no time left after their studies. In fact, doing exercise can help them sleep better at night and increase their ability to focus on their study.
If you follow the suggestions above, you will look and feel much better and become fit.
小题1:What’s the main idea of this passage?
| A．How to eat food. | B．How to keep fit. |
| C．How to lose weight. | D．How to exercise. |
| A．营养 | B．强壮 | C．能量 | D．锻炼 |
| A．5 | B．50 | C．30 | D．150 |
| A．exercise regularly |
| B．drink lots of water |
| C．have a healthy eating habit along with regular exercise |
| D．eat rice, bread, vegetables and fruit |
Pollution problems are becoming more and more serious. One of them is called “white pollutions” caused by plastic, such as shopping bags, boxes and cups. In China, about three billion plastic shopping bags are used every day, which results in a great waste of resources(资源) and heavy environment pollution. Luckily, the government has stopped us from using free plastic bags, telling all stores and supermarket not to provide customers(顾客) with free plastic bags since June 1,2008. From then on, people have been supposed to use cloth bags and shopping baskets instead of plastic bags in order to protect our environment.
Now, more and more people have realized the importance of using the cloth bags and shopping baskets. For one thing it can protect our environment, for another it can also save energy. Yet we have more things to do to solve the problem of “white pollution”!
小题1:Is “white pollution” caused by plastic?
__________________________________________
小题2:How many plastic shopping bags are used every day in China?
_____________________________________________
小题3:What are the advantages of using cloth bags or shopping baskets？
————————————————————————
It’s germ that makes us ill. There are germs everywhere, They are very small and you can’t find them with your own eyes, but you can see them with a microscope（显微镜）. They are very small and there may be hundreds of them on a very small thing, Germs can always be found in the dirty water. When we look at dirty water under the microscope, we shall see them in it. Germs can also be found in air and dust（灰尘）. If you cut your finger, some of the dust from the floor may go into it, and you will have much pain in it. Sometimes the germs will go into all of your boby, and you will have pain everywhere.
To keep us healthy, we should try to our best to make our environment become cleaner and tidier. This needs us to act together.
小题1:The writer tell us that________.
| A．we like working when we are ill |
| B．germs can’t live in the water. |
| C．we can’t feel ill if the environment is bad. |
| D．we feel well when the environment is good. |
| A．very small things that you can’t see with your eyes. |
| B．the things that don’t effect people. |
| C．the things that you can find with your eyes. |
| D．the things that are very big. |
| A．on the small thing | B．in air and dust |
| C．only in dirty water | D．everywhere |
| A．I will feel nothing. | B．I won’t mind. |
| C．I will feel tense. | D．I will feel painful. |
| A．environment doesn’t affect our life. |
| B．we don’t need to improve our environment. |
| C．germs may make us ill. |
| D．if the environment is better, germs will be more. |
阅读下列短文，从文后各题所给的四个选项中选出一个最佳答案。
Do you know why different animals or pests(害虫) have their special colors? Colors in them seem to be mainly used to ___1___ themselves.
Some birds like eating locusts(蝗虫), but birds cannot ___2___catch them. Why? It is because locusts change their__3___ with the change of the colors of crops. When crops are green, locusts look ___4___. But as the harvest time comes, locusts change into the same brown color __5___ crops have. Some other pests whose colors are ___6__ plants are easily found and eaten by ___7___. So they have to hide themselves for lives and appear only __8____.
If you ___9___ animals’ life, you’ll find the main use of colors is to protect __10___. Bears, lions and other animals ___11___ quietly through forests. They cannot be easily seen by hunters ___12___ their colors are much like the trees.
Colors are useful not only on the land, but also in the __13___. A kind of fish can __14____ a kind of black liquid(液体) when they face danger. The liquid spreads over quickly, so they cannot be found by their enemies and can quickly swim away. That is ___15____ they can live safely though they are not strong at all. So colors are really useful to animals.
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Some food is carried in closed bags. It is cooked and frozen before the astronauts get it. All the water is removed from the food. In the spaceship, the astronaut puts the water back. He “shoots” hot or cold water into the food bag with a special gun. He eats the food through a small hole in the bag.
Other foods come in bite sizes. The astronaut puts a whole piece in his mouth at once. There can be no crumbs. Crumbs would float around the spaceship and get in the way. Meat and cakes often come in bite-size pieces.
Astronauts cannot drink water from open cups. The water would float in drops in the spaceship. The water is put in the special gun. The astronaut shoots the water into his mouth.
小题1:Some food carried in the closed bags by astronauts is ________.
A. cooked and frozen B. full of water C. raw
小题2:Astronauts can’t drink from open cups because__________.
A. the water would float in drops around the spaceship
B. the water would spill all over their foods
C. crumbs would float in the cups
小题3:The main idea of the passage is that __________.
A. astronauts cannot eat or drink in a spaceship until they come back to the earth
B. eating and drinking in the spaceship is a special problem
C. there is more food and water in space than on the earth
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