Do you know why different animals or insects have their special colors? Colors are used mainly to protect themselves. Why can’t some birds easily catch locusts(蝗虫)? 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 autumn comes, locusts change to the same brown color as crops have. Some other insects with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives in the day and appear only at night. If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals can’t be easily seen by hunters. This is because they have the colors much like the trees. Have you ever noticed an even more strange thing? A kind of fish in the sea can send out black liquid when it faces danger. While the liquid spreads over, its enemies can’t find it. And it quickly swims away. So it has lived up to now though it is not strong at all. 小题1: From the article we learn that locusts .A.are dangerous to their enemies | B.are easily found by birds | C.change their colors to protect themselves | D.are small animals | 小题2:How can insects with different colors from plants keep out of danger?A.They have to move quietly. | B.They hide themselves in the day and appear at night. | C.They have the colors much like their enemies. | D.They run away quickly. | 小题3: Bears and lions can keep safe because .A.they live in forests | B.they like brown and grey colors | C.they move quietly | D.they have the colors similar to the trees | 小题4:What does the word “liquid” mean in the last paragraph?小题5: Which is the best title for this passage?A.The Main Use of Colors for Animals and Insects | B.Colors of Different Animals and Insects | C.The Change of Colors for Animals and Insects | D.The Change of Different Animals and Plants |
|
小题1:C小题1:B小题1:D小题1:C小题1:C |
1.C 根据It is because locusts change their colors together with the change of the colors of crops可以知道蝗虫通过改变颜色来让自己不被发现,从而保护自己,故选C。 2.B 根据So they have to hide themselves for lives in the day and appear only at night.可知他们白天把自己隐藏起来,只在晚上出现,故选B。 3.D 根据because they have the colors much like the trees可知熊和狮子的颜色像树的颜色,也就是说他们的颜色相似,选D。 4.C 本题是猜词题,要联系上下文来看。根据While the liquid spreads over, its enemies can’t find it可知能在水中扩散让敌人不找不到他们的的是一种液体,也就是我们说的乌贼,选C。 5. C 主旨大意题的考查,文章主要讲的是动物和昆虫的颜色的改变,通过改变颜色他们能有效地保护自己,故C最佳。A,B只是文章提到了一个方面,D的植物变色文章未讲到。 |
核心考点
试题【Do you know why different animals or insects have their special colors? Colors a】;主要考察你对
科普环保类等知识点的理解。
[详细]
举一反三
Do you know there are many kinds of grass? Some are tall. The kind that grows around your house is short grass. But field grass often grows as tall as a man. Some food that we eat comes from plants of the grass family. Wheat and rice are two of them. We use wheat to make bread. We use both wheat and rice to make breakfast. At some places, people eat more rice than any other food. Animals as well as people get food from the grass family. Cows eat hay(干草). Do you know the kind of grass that horses like to eat? 小题1:Which of the following belongs to(属于) the grass family? A. Wheat. B. Rice. C. Apples. D. A and B. 小题2: We use ____ to make bread.A.rice | B.fruit | C.wheat | D.grass family | 小题3:Which of the following doesn’t get food from the grass family?A.Horses. | B.Sheep. | C.Dogs. | D.Cows. | 小题4:Which of the following is wrong? The grass family are all short. There are many kinds of grass. Field grass often grows as tall as a man. Horses get food from the grass family. |
Many parents make their children do chores around the house. For some families, teaching children what to do and how to do chores is easy. But in other families, getting children to do some housework can be a very big problem. It is a good idea for parents to teach their children at an early age. All family members must work together to make the house clean, and each person must do his or her share(份) of the work. We can do this by starting plan of chores and responsibilities(责任) when children are young. Chores are good for children—even very young ones. Doing chores can teach children many important skills(技能) like working together. Jobs also teach children what is fair(公平). The skills and value(价值) from doing chores will be good to children all their lives. 小题1:The first paragraph(段) tells us ____________.
A.all the parents make their children do chores
| B.it’s easy to teach children to do chores
| C.some children think doing chores is difficult
| D.teaching children to do chores is different in different families
| 小题2:Children can learn ___________ from doing chores.
A.working together with others
| B.how to write
| C.what is fair
| D.Both A and C
| 小题3:Which of the following sentence is TRUE?
A.It’s a small thing to teach children to do chores.
| B.Only the children who do chores know what is fair.
| C.Some children like to do chores but some don’t.
| D.In a family, young children don’t need to do chores.
|
|
A plant(植物) makes its own food in its leaves .Water comes to the leaves through the roots(根). Air gets into the leaves through very small holes(孔) . The green coloring in the leaves uses the water and air to make the food for the plant . It also needs sunshine because a plant can make food only when the sun is shining. Animals and people could not live without green plants . They both eat plants .People and some animals also eat the meat of some animals and these animals eat plants. 小题1: A plant gets food from________A.the sun | B.its leaves | C.its roots | D.the air | 小题2:What does the green coloring use to make the food for a plant?A.Sunshine ,water ,air and the roots | B.Air ,sunshine and water | C.Water ,air and meat | D.Water ,sunshine and animals | 小题3:A plant has very small holes in its leaves for__________ to come in.A.air | B.water | C.sunshine | D.green coloring | 小题4: A plant can make its food when it is _______.A.cloudy | B.rainy | C.sunny | D.windy | 小题5:People would die without________A.animals | B.meat | C.plants | D.leaves |
|
Do you know HFMD? It’s short for Hand-Foot-Mouth Disease. This year, in China, thousands of children were suffering from it. What’s HFMD? How to prevent it? Now, read the passage please. HFMD usually affects babies who are 1~4 years old, but adults can also be infected. Both EV71 and Cox A16 can cause HFMD, which usually starts with a slight fever followed by blisters (水泡) and ulcers (溃疡) in the mouth and rashes (皮疹) on the hands and feet. It can be spread through people with the mucus (唾液) or feces (粪便) of an infected person. It usually appears during the summer and autumn months. HFMD isn’t Bird Flu, SARS or Mad Cow Disease, but it’s not a new one, either. It first appeared in New Zealand in 1957. About forty years later, it appears in Asia. It’s reported that it breaks out every 2 or 3 years. HFMD is very terrible and there is no vaccine (疫苗) now, but we can do something helpful to prevent it. ‘Children with HFMD should seek medical treatment as early as possible’, experts say. They also suggest that parents keep the air fresh in a child’s room, which should be kept clean, tidy and dry. Children should be taught to wash their hands regularly. Staying away from crowded public places is also basic. 小题1: HFMD is usually spread with ____________.A.feces | B.feces of an infected person | C.water | D.mucus | 小题2:Which isn’t helpful to prevent HFMD?A.to keep the air fresh in a child’s room | B.wash hands regularly | C.see a doctor | D.stay in crowded public places | 小题3:Can you guess the meaning of the underlined word ‘infected’ in paragraph 3?小题4:About HFMD, which one is right?A.It’s the same as Mad Cow Disease . | B.It first appeared in China. | C.Adults can be infected too. | D.There is vaccine now. | 小题5:Can you give a title for the article?A.The history of SARS | B.What’s and how to prevent HFMD | C.HFMD in China | D.How to prevent HFMD |
|
What is the best way to study ? This is a very important question. Some Chinese students often 41 very hard 42 long hours. This is a 43 habit (习惯), but it is not a better way to study . A good student must 44 enough sleep, enough food and enough rest. Every 45 you 46 to take a walk or play basketball or ping-pong or sing a song. When you 47 to your studies, you’ll find yourself 48 than before and you’ll learn more. Perhaps we can 49 that learning English is like taking Chinese medicine, we mean that like Chinese medicine, the effects(效果) of your study 50 slowly but surely. Learn every day and effects will come just like Chinese medicine.
小题1: | A.play | B.study | C.sleep | D.think |
|
小题3: | A.best | B.better | C.good | D.bad |
|
小题8: | A.stronger | B.weaker | C.strong | D.week |
|
小题10: | A.return | B.come | C.give | D.get |
|
|