If I ask you to shut your eyes and gave you a piece of apple to eat, would you be able to tell me what it is just by tasting it? Of course, you could. Your tongue is covered with tiny “taste buds” which help you know what different foods taste like. Do you know that foods would taste different if you did not have a nose? This experiment shows how important your nose is when you taste things.
What You Need:
? a friend to help
? small pieces of any food like carrot, orange, banana
? small pieces of apple, raw(生的) potato, and onion
What You Do:
There are actually three different experiments. You and your friend should take turns to try them on each other.
Experiment 1:
Have your friend close her eyes and open her mouth.
Give her a piece of the food and ask her to taste it.
Then, ask her what she thinks it is. She will probably guess correctly.
Experiment 2:
While your friend has her eyes closed, give her a piece of the raw potato. At the same time, hold a piece of apple right under her nose. Ask her to eat the potato (but don’t call it by name) and tell you what she thinks it is. She will say it is a piece of apple!
Experiment 3: (for the brave)
Take a piece of raw onion. You don’t have to close your eyes this time. Squeeze your nose closed with your other hand so that no smells can get into your nose. Now take a nibble of the onion. Surprise! As long as you hold your nose, you will not be able to taste the onion.
The Science Secret
You already know the science secret. Your nose and your tongue work together to make food taste the way it does. Your tongue, however, can taste only certain flavors like salty, bitter, sour, and sweet. All of the other “tastes” are actually “smells,” and you need your nose to “taste” them. Oh, and you might use this science secret the next time you are told to eat something you don’t like the taste of. If you hold your nose while you eat it, you won’t “taste” it at all.
小題1: According to this article, what could a reader know about food?
A.People hold their noses to eat onions.B.If you can smell potatoes, you will taste apples.
C.People need a sense of smell to taste some food.D.If you close your eyes, food will taste better.
小題2:What is the most likely reason Experiment 3 is called “for the brave”?
A.You keep your eyes open.B.You have to eat a raw onion.
C.You have to squeeze your nose.D.You do the experiment alone.
小題3:What’s the best title of the passage?
A.Your Eyes KnowsB.Your Nose Knows
C.Your Mouth KnowsD.Your Tongue Knows

小題1:C
小題2:B
小題3:B

試題分析:本文通過三個(gè)實(shí)驗(yàn)說明鼻子的重要性,只有鼻子與舌頭一塊工作才能嘗出味道。
小題1:C 細(xì)節(jié)理解題。根據(jù)第一段Do you know that foods would taste different if you did not have a nose? This experiment shows how important your nose is when you taste things.你知道如果沒有鼻子食物嘗起來還會(huì)不同嗎,這個(gè)試驗(yàn)證明當(dāng)你嘗東西時(shí)鼻子的是重要的。所以選C項(xiàng)。
小題2:B 細(xì)節(jié)理解題。根據(jù)倒數(shù)第二段提到Squeeze your nose closed with your other hand so that no smells can get into your nose捂住你的鼻子,為的不讓氣味進(jìn)入你的鼻子,Now take a nibble of the onion. Surprise! As long as you hold your nose, you will not be able to taste the onion.現(xiàn)在嘗嘗洋蔥,令人吃驚的是,只要捂住你的鼻子,你就嘗不出洋蔥的味道,可見這個(gè)試驗(yàn)是需要勇氣來吃洋蔥的,所以選B項(xiàng)。
小題3:B 主旨大意。本文通過三個(gè)實(shí)驗(yàn)來證明Your nose and your tongue work together to make food taste the way it does.你的鼻子和舌頭一塊作用才能吃出食物的味道。再根據(jù)第一段This experiment shows how important your nose is when you taste things.,說明鼻子的重要性,所以選B項(xiàng)。
考點(diǎn) 科普知識(shí)類短文閱讀。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:初中英語 來源:不詳 題型:閱讀理解

On April 20th,2013, a big earthquake hit Ya’an, Sichuan. Nearly 200 people died. Many people were hurt. Why do earthquakes happen?
The surface(表面) of the earth has many pieces. These pieces are always moving. When two pieces move past each other, there is an earthquake.
Scientists are working hard to find out more about earthquakes. They try to predict(預(yù)測(cè)) them, but it’s very hard.
Do you know how to get ready for an earthquake? Do you know what to do during an earthquake? Here are some things you should know.
What to do before an earthquake
Make sure you have two bottles of water, a packet of biscuits, a clean towel , a few band-aids(創(chuàng)可貼), a radio and a flashlight(電筒)at home.
What to do during an earthquake
If you are inside:
★Stay where you are. Quickly move under a strong desk, or along a wall. This will protect you from falling things.
★Don’t stand near windows.
★Turn off the lights.
★Don’t get into a lift during an earthquake. If you are in a lift, get out quickly.
If you are outside:
★Don’t stand near buildings. Things may fall on you.
★L(fēng)ie on the ground until the shaking stops.
小題1:An earthquake hit Ya’an     .
A.on April 12th, 2013B.on April 20th, 2013
C.on May 14th, 2013D.on May 12th, 2013
小題2:You need      at home before an earthquake.
A.some water and biscuitsB.a(chǎn) clean towel and a few band-aids
C.a(chǎn) radio and a flashlightD. A, B and C
小題3:You must protect yourself in an earthquake by     .
A.lying on the groundB.turning on the lights
C.standing near the windowsD.getting into a lift

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

Early to bed, early to rise, makes a man healthy, wealthy and wise.
This is an old English saying. Do you know it before? It says that we must go to bed early and get up early in the morning. Then we should be healthy. We should also be rich (wealthy) and clever (wise).
This is true. The body must have enough sleep to be healthy. Children of a young age should have ten hours’ sleep every night. Children who don’t have enough sleep can’t do their work very well. They will not be wise and they may not become wealthy!
The body also needs exercise. Walking, running, jumping, swimming and playing games are all exercise. Exercise keeps the body strong.
Exercise also keeps the blood(血液)moving around inside the body. This is very important. Our blood takes food to all parts of our body. The head also needs blood. Exercise helps us to think better!
小題1:If a child doesn’t have 10 hours’ sleep every night, he _____.
A.will become wise
B.won’t do well in his work
C.will have to sleep in the daytime
D.can’t go to school in time
小題2:A person needs exercise because ______.
A.it makes him healthy
B.he has a lot of homework to do
C.it doesn’t need time
D.it is fun to do exercise
小題3:Exercise makes the _______ move quickly and smoothly.
A.bodyB.bloodC.childrenD.head
小題4:Which of the following is not true?
A.Exercise is good for a person’s head
B.A student should have 10 hour’s sleep.
C.It’s good for you to get up early and go to bed early.
D.If you have enough blood, you’ll be wise

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

In the world, soccer (or football) is the most popular sport. This is because many countries have wonderful teams for the World Cup. The World Cup is held every four years.
To remember the 2002 FIFA World Cup, children from different countries and more than 60 children from different Japanese schools came together and spent three weeks drawing a big picture called“Dream (夢(mèng)幻) World Cup”in Japan. The children drew animals, flowers and people playing soccer under bright blue sky. They wished each football team good luck by drawing the flags (旗幟) of all countries that would take part in the World Cup in Japan and South Korea. The picture was put up in a park near a playground in Yokohama.
Are you a football fan? The World Cup makes more and more people interested in football. Teenagers like playing and watching football. Many of them love some football stars so much that they get pictures of their favorite players such as, Figo, Oven and Pauleta. And they put the pictures up on the walls of their rooms. That is the way to show their love for the World Cup.
根據(jù)短文內(nèi)容,選擇正確答案。
小題1:If a country wants to take part in the World Cup, it must have _______.
A.many football fansB.a(chǎn) very good football team
C.many football playersD.a(chǎn) big playground
小題2:The next World Cup will be held in _______, after 2006.
A.2007B.2008
C.2009D.2010
小題3:From the passage, in the picture children drew many things except _____.
A.some football starsB.people playing football
C.a(chǎn) sunny skyD.flowers
小題4:In “Dream World Cup”, the children drew the flags of some countries ___.
A.to show their love for their own countries
B.to tell the people their stories
C.to show their good wishes for the football teams
D.to show their new ideas about football
小題5:Many teenagers (青少年) own pictures of some football stars because ___.
A.they are interested in footballB.they are football fans
C.they think their favorite players are greatD.A, B and C

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

"Depend on yourself" is what nature says to every man. Parents can help you. Teachers can help you. Others still can help you. But all these only help you to help yourself.
There have been many great men in history. But many of them were very poor in childhood, and had no uncles, aunts or friends to help them. They couldn't depend on them for education. They saw how it was, and began to work with their efforts.
One of the most famous teachers in England used to tell his pupils, "I can't make worthy men of you, but I can help you make men of yourselves."
Some young men are not the best in anything, and they are to be pitied(值得同情的). They can never do things successfully if they don't see their weak points and change their courses(做法). They are nothing now, and will be nothing as long as they live if they don't follow the advice of their parents and teachers, and depend on their own efforts.
小題1:"Depend on yourself" in this passage means ________.      
A.depend on your own effortsB.depend on nature
C.wait for others to helpD.depend on your parents
小題2:Many of the great men in history succeeded because________.  
A.they were very poor in childhood
B.they could not depend on schools for an education
C.they made great efforts to learn and work
D.they wanted very much to become famous
小題3:According to the famous teacher in England, a teacher can _______.     
A.make his pupils worthy men
B.teach his pupils everything he knows
C.help his pupils make themselves useful men
D.make his pupils men of strength and courage
小題4:If young people depend on their own efforts, ____________  
A.they are to be pitied
B.they can never be successful
C.they are nothing now and will be nothing in the future
D.they can be successful in their work
小題5:The main idea of the passage is that         .
A.we should depend on our parents and teachers
B.we can depend on our friends and relatives
C.a(chǎn)ll great men in history were poor when they were young
D.we can't depend on our parents or teachers, but we can get advice from them

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

Living and dealing with kids can be a tough job these days, but living and dealing with parents can be even tougher.
  If I have learned anything in my 16 years, it is that communication is very important, both when you disagree and when you get along. With any relationship, you need to let other person know how you are feeling. If you are not able to communicate, you drift apart.When you are mad at your parents, or anyone else, not talking to them doesn’t solve anything.
  Communication begins with the concerns (關(guān)心) of another. It means that you can’t just come home from school, go up to your room and take no notice to anyone. Even if you just say “Hi”, and see how their day was for five minutes, it is better than nothing.
  If you looked up the word “communication” in a dictionary, it would say “the exchange of ideas, the conveyance (表達(dá))of information, correspondence (通信), means of communication: a letter or a message”. To keep a good relationship, you must keep communication strong. Let people know how you feel, even if it’s just by writing a note.
  When dealing with parents, you always have to make them feel good about how they are doing as a parent. If you are trying to make them see something as you see it, tell them that you’ll listen to what they have to say, and ask them politely to listen to you. Shouting or walking away only makes the situation worse.
  Here is an example: one night, Sophie went to a street party with her friends. She knew she had to be home by midnight after the fireworks, but she didn’t feel she could just ask to go home. That would be rude. After all, they had been nice enough to take her along with them. Needless to say, she was late getting home. Her parents were mad at first, but when Sophie explained why she was late, they weren’t as mad and let it go. Communication is the key here. If Sophie’s parents had not been willing to listen, Sophie would have been in a lot of trouble.
  Communication isn’t a one-way matter: it goes both ways. Just remember: if you get into a situation like Sophie’s, telling the other person how you feel-------listening is the key to communication.
小題1:In the writer’s view, dealing with parents is __________ than with children.
A.more difficultB.much easier
C.less interestingD.more interesting
小題2:The underlined phrase “ drift apart” in Paragraph 2 means __________.
A.keep up with othersB.move along smoothly
C.distance yourself form othersD.come closer to each other
小題3:The example in Paragraph 6 shows that ___________.
A.Sophie is very polite to her parents  
B.Sophie’s parents are willing to listen to her
C.Sophie did well in explaining her being late
D.communication is the solutionto misunderstanding
小題4:All the following statements are correct except “_______”.
A.Communication is a two-way matter  
B.It is better to say “Hi” to others than say nothing
C.If you don’t agree with others, you’d better let them know
D.When dealing with parents, you only need to listen to them

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解



China's first moon rover (月球車), Yutu, set off from the lander early on December 15, several hours after the Chang'e-3 probe (探測(cè)器) soft-landed on the moon surface.
The 140 kg six-wheeled rover touched the moon surface at 4:35 a.m., leaving deep lines on the loose moon land. This was recorded by the camera on the lander and the images were sent to the earth, according to the Beijing Aerospace Control Center. After that, the rover and lander will take photos of each other and start their own science explorations.
Earlier this morning, engineers made final checks of the environment of the landing area and the situation of the probe. Yutu, reached its solar panel (光板) and started to drive slowly to the moon at 3:10 a.m.. It took Yutu nearly a whole hour to complete the simple task.
Chang'e-3 landed at the Bay of Rainbows on the moon, at 9:11 p.m. on December 14, making China the
third country in the world to carry out such a mission (執(zhí)行此類任務(wù)) after the United States and Russia.
In old Chinese tales, Yutu was the white pet rabbit of Chang'e’s. The name for the rover was selected following an online survey that collected several million votes from people around the world.
The rover, 1.5 meters long with its two wings folded (折疊), 1 m in width and 1.1 m in height, is a perfect robot controlled by the command center from the earth. It will face challenges including temperature differences of more than 300℃ on the moon.
Yutu will do some research and look for natural resources (資源) for three months, while the lander will conduct an exploration at the landing place for one year. Then they will have a good rest on the moon and will not be used for a long time until China’s next probe visits the moon again.
小題1: Which is the best title for the passage above?
A.The first rover on the moonB.The tale of Chang’e
C.The journey to the moonD.Yutu explores the moon
小題2:Which is the correct order of the following events?
a. The 140 kg six-wheeled rover touched the moon surface.
b. The rover and lander will take photos of each other.
c. Yutu started to drive slowly to the moon.
d. Chang'e-3 landed at the Bay of Rainbows on the moon.
A.a(chǎn)-b-c-dB.c-d-a-bC.d-c-a-bD.c-a-b-d
小題3:What does the underlined word width mean in Chinese?
A.智力B.寬度C.重量D.長(zhǎng)度
小題4:Which of the following is true according to the passage?
A.The moon had been visited by only two countries before 2013.
B.Yutu is a perfect robot under the control of its own computer.
C.Yutu and Chang’e will return to the earth after the one-year mission.
D.Chang’e-3 is 140 kg in weight.
小題5:There will soon be a second moon rover to explore the moon. Which is its proper name?
A.Chang’e-4 B.Yutu-2 C.Shenzhou-11 D.Tiangong-2

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

Light travels at a speed which is about a million times faster than the speed of sound. You can get some idea of this difference by watching the start of a race. If you stand some distance(距離) away from the starter, you can see smoke from his gun before the sound reaches your ears.
This great speed of light produces some strange facts. Sunlight(太陽(yáng)光) takes about 8 minutes to reach us. If you look at the light of the moon tonight, remember that the light rays left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light that you can see from it tonight started to travel towards you four years ago at a speed of nearly 2 million km. per minute. In some cases, the light from one of tonight’s stars had started on its journey to you before you were born.
Thus, if we want to be honest, we can’t say, “The stars are shining tonight.” We have to say instead, “The stars look pretty. They were shining four years ago, but their light has only just reached the earth.”
小題1:Light speed is ______ sound speed.
A.a(chǎn)s fast as
B.a(chǎn) million times slower than
C.a(chǎn)bout millions of times faster than
D.a(chǎn)bout a million times faster than
小題2: If you stand 200 meters away from a man who is firing a gun to start a race, you will find out that ______.
A.you can hear the sound before you see the smoke
B.the sound does not travel as fast as light
C.the sound will reach you before the man fires
D.sound travels about a million times faster than light
小題3:Sunlight obviously(顯然的) ______ than the light of the moon.
A.has to travel a greater distance
B.moves less quickly
C.travels much more quickly
D.is less powerful
小題4: The scientific way of saying "The stars are shining tonight" should be ______.
A.the stars have been shining all the time
B.the stars seen tonight will shine four years later
C.the stars were shining long ago but seen tonight
D.the starlight seen today could be seen four years ago

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

In most parts of the world, many students help their schools make less pollution(污染). They join "environment(環(huán)境)club". In an environment club, people work together to make our environment clean.
Here are some things students often do.
No-garbage(垃圾)lunches. How much do you throw away after lunch? Environment clubs ask students to bring their lunches in bags that can be used again. Every week they will choose the classes that make the least garbage and report them to the whole school.
No-car day. On a no- car day, nobody comes to school in a car- not the students and not the teachers. cars give pollution to our air, so remember: walk,
Turn off the water! Did you know that toilets(抽水馬桶)can waste twenty to forty tons(噸)of water an hour? In a year, that would fill a small river! In the environment clubs, students mend those broken toilets.
We love our environment. Let's work together to make it clean.
小題1:Environment clubs ask students
A.to run to school every day.B.to take exercise every day.
C.not to forget to take carsD.not to throw away lunch bags
小題2:From the passage we know the students usually have lunch_______.
A.a(chǎn)t schoolB.in shopsC.in clubsD.a(chǎn)t home
小題3:On a no -car day,_______ will take a car to school.
A.both students and teachersB.only students
C.only teachersD.neither students nor teachers
小題4:The writer wrote the passage to ask students to_______
A.clean schoolB.make less pollutionC.join clubsD.help teachers

查看答案和解析>>

同步練習(xí)冊(cè)答案