题目
题型：不详难度：来源：
Your Nose is Busy and Important
Your nose has many important jobs, and is always busy.
Smelling
Smelling helps you gather information about the world around you. A good scent (气体),like flowers, brings you pleasure. A bad scent, like smoke or sour milk, warns you of danger. Most things around you release scent particles (微粒) into the air. These invisible chemicals enter the nose when you breathe. Nerves in the nose send information to the brain to identify a smell. You are able to recognize thousands of smells.
Breathing
Most of the air you breathe enters through your nose. The nose uses hair and mucus (粘液) to clean dust and germs (细菌) out of the air. The air that enters your nose contains oxygen. Your body uses oxygen to unlock the energy in the food you eat. Even when you sleep, your body needs energy to keep your heart beating and your brain working.
Tasting
Your nose helps you enjoy food. Flavor is a mixture of taste and smell. The smell of the food helps you identify what you are eating. The sense of smell contributes more to (贡献) food flavor than the sense of taste .When you are sick and have a stuffy nose, your food doesn’t taste as good because without smell, food loses most of its flavor.
Smell memory
Smells can bring back memories. Your brain uses a process to create a picture in your mind from the odors(气味)you smell. Smells can affect your feelings because the part of the brain that helps you identify smells is close to the area that affects your emotions, mood and memory. More smell memories are collected as you get older.
Your nose has many important jobs, and is more than just a smeller!
小题1:How many important jobs does a nose do according to the passage? What are they?
小题2:Smelling helps you recognize thousands of smells, doesn’t it?
小题3:What does the nose use to clean dust and germs out of air?
小题4:What happens to your food if you are sick and have a stuffy nose?
小题5:How do smells bring back memories?
小题6:What do you think of your nose? Why do you think so?
答案
小题1:Four. They are smelling, breathing, tasting and smell memory.
小题2:Yes, it does.
小题3:Hair and mucus.
小题4:It won’t taste as good.
小题5:By using a process to create a picture in your mind from the odors you smell.
小题6:It is very useful. Because it has many important jobs. Any reasonable answer is ok.
解析
小题1:根据每段的小标题可知是Four. They are smelling, breathing, tasting and smell memory.
小题2:从第二段的Nerves in the nose send information to the brain to identify a smell. You are able to recognize thousands of smells.可知是Yes, it does.
小题3:从第三段的The nose uses hair and mucus (粘液) to clean dust and germs (细菌) out of the air.可知答案是Hair and mucus.
小题4:从第四段的when you are sick and have a stuffy nose, your food doesn’t taste as good because without smell, food loses most of its flavor.可知答案It won’t taste as good.
小题5:从第五段的Your brain uses a process to create a picture in your mind from the odors(气味)you smell.可知答案是：By using a process to create a picture in your mind from the odors you smell.
小题6:从最后一段的句子Your nose has many important jobs, and is more than just a smeller!看出It is very useful. Because it has many important jobs. Any reasonable answer is ok.
核心考点
试题【Answer the questions（根据短文内容回答下列问题)Your Nose is Busy and ImportantYour nose has m】；主要考察你对科普环保类等知识点的理解。[详细]
举一反三
“I sometimes get up at three or four in the morning and I surf the net.”
“I often check my e-mail forty times a day.”
“I often spend more than three hours during one time on the net.”
“I spend more time in chat rooms than with my ‘real-1ife’ friends.”
Do you know any people like these? They are part of a new addiction(瘾) called Internet addiction. Internet addicts spend at least thirty to forty hours online every week. The use of the Internet can be an addiction like drug(毒品) use. People lose control of the time they spend on the Internet
For example, one college student was missing for several days. His friends were worried, and they called the police. The police found the student in the computer lab: he was surfing the net for several days straight.
Studies show that about 6 to 10% of Internet users become addicted. And people worry about the teens because the Internet is changing the playing field for some of them. They spend more time in cyberspace than in the real world of friends and family.
Is ‘surfing the net’ a hobby or an addiction for you? You may have a problem if you have these symptoms(症状):
●You do not go to important family activities or you do not do school work because you like to spend hours on the Internet.
●You can’t wait for your next online time.
●You plan to spend a short time online, but then you spend several hours.
●You go out with your friends less and less.
小题1:What does the beginning of the passage tell us?
| A．How to become an Internet addict. |
| B．What an Internet addict usually does. |
| C．Where to find an Internet addict. |
| D．Why to write this passage. |
| A．It is something like keeping drugs. |
| B．It is a way of producing drugs. |
| C．It is like taking drugs. |
| D．It is terrible to imagine. |
| A．The teens are wasting too much money. |
| B．They used to work on the Internet. |
| C．The playing field of the teens will disappear. |
| D．More and more of the teens wil1 become addicted to the Internet. |
| A．Internet problems are more serious among college students |
| B．Internet addicts usually stay in the computer lab without sleep |
| C．Some of the Internet users have already been seriously addicted |
| D．The police often help to find those Internet addicts. |
| A．Don’t be addicted to the Internet. |
| B．Go to family activities more often. |
| C．Do things as you have planned. |
| D．Stay with your parents as often as possible. |
Hands play an important part in our daily life. But do you know which of your two hands you use more? Very few people use both hands equally well. Most of us are right-handed. Only about five people out of a hundred are left-handed. New-born babies can take hold of things with either of their hands, but in about two years they usually use their right hands. Scientists don’t know why this happens.
Monkeys are our close relatives in the animal world. Scientists have found that monkeys like to use one of their hands more than the other, but it can be either hand. There are as many right-handed monkeys as left-handed ones. Next time you visit a zoo, watch the monkeys carefully, you will see that some of them will use their right hands and others will use their left hands. But most of the people use their right hands better and this makes life difficult for those left-handed people. We live in a right-handed world.
小题1:How many people among 100 people use their left hands better?
A. 5%. B. 50%. C. 95%.
小题2:What’s the meaning of the underlined word “equally” in Chinese?
A. 公正地 B. 均等地 C. 平凡地
小题3:New-born babies can use ____ ____ __.
A. both of their hands B. neither of their hands C. their right hands
小题4:Which of the following is true?
A. There are more monkeys using their right hands than left hands.
B. There are more monkeys using their left hands than right hands.
C. There are as many right-handed monkeys as left-handed ones.
小题5:“We live in a right-handed world. ”means ____ ____ __.
A. Most people use their right hands better.
B. Few people use their right hands better.
C. Half of the people use their right hands better.
The first telephone cards, produced in 1976, were Italian. Five years later the first British card appeared, and now you can buy cards in more than a hundred countries. People usually start collecting cards because they are small and light and you do not need much space for them. It is also a cheap hobby for beginners, although for some people it becomes a serious business. In Paris, for example, there is a market where you can only buy telephone cards, and some cards cost up to ￡4,000. The first Japanese card has a value of about ￡28,000. Most people only see cards with prices like these in their collectors’ magazine.
小题1:When were the first Italian telephone cards produced? _________________________________________________
小题2:How many countries can produce telephone cards now? _________________________________________________
小题3:Where can we find a market to buy telephone cards?
_________________________________________________
小题4:What is the price of the first Japanese telephone card?
_________________________________________________
小题5:In which magazine do most people see cards with prices?
_________________________________________________
Do you sometimes argue about what seems to you to be a simple fact? Do you argue whether it’s cold outdoors or whether the car in front of you is going faster than the speed limit (限速)?
If you get into such arguments, try to think about the story about the six blind men and the elephant. The first blind man who felt the elephant’s trunk (象鼻) said it was like a snake. The second who felt the elephant’s side said it was like a wall, while the third said it was like a spear( 矛 ) as he touched the animal’s tusk. The fourth, who took hold of the elephant’s tail, insisted that it was like a rope. The fifth man said it looked like a tree as he put his arms around one of the elephant’s legs. The last, who was tall and got hold of the elephant’s ears, said it was like a huge fan.
Each man’s idea of the animal came from his own experience. So if someone disagrees with you about a “simple fact”, it’s often because his experience in the matter is different from yours.
To see how hard it is for even one person to make up his mind about a “simple fact”, try this simple experiment. Get three large bowls. Put ice water in one. Put hot water in the second. Put lukewarm water (温水)in the third. Now put your left hand in the hot water. Put your right hand in the lukewarm water. Your right hand will tell you the water is cold. Your left hand will tell you it is hot.
小题1:There were _______ blind man who were trying to tell what an elephant was like in the story.
| A．two | B．four | C．five | D．six |
| A．heavy | B．thin | C．tall | D．strong |
| A．your left hand | B．your right hand | C．the water | D．the bowl |
| A．People’s wrong ideas. |
| B．People’s different experience. |
| C．Simple facts are different sometimes. |
| D．People often disagree with each other. |
| A．learn from the blind men |
| B．not agree about simple facts |
| C．never think about simple facts |
| D．never decide anything with one side |
You have often __1__ people talk about work. Perhaps you have __2__ your friends about how hard you worked to get something done. However, you may have done no work __3_ you think you worked hard.
A boy is pushing a big box very hard, but the box is __4__ heavy for him to move and he may __5__ to push against the box. __6__ the language of science, he has not done __7__ work. Can you think you are working when you are studying or talking?
In science, work is only done when a force(力) moves something that has weight through a distance（距离）.
Work =" force" × distance moved.
__8_ you want to find out whether work is done, _9_ yourself, “Is a push or a pull moving something through a distance?” If your answer is __10_, then work is being done.
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