MSG(monosodium glutamate) is a food additive(食品添加劑),which has been widely used by many food factories all over the world since it appeared first in Japan in 1909.
MSG is a substance that is added to some food to improve its original(原先的) taste and colour. It is used in foods around the world such as cakes, bread, frozen meats, fish and vegetables. In the beginning, people thought MSG was safe just like salt and sugar. However, in 1968 some people reported they seemed to have bad reactions(反應(yīng)) to MSG after having had a meal at a restaurant. They included headaches and quick heartbeat(心跳).It was also reported that MSG excited a person’s brain and caused his death in Japan. Scientists think that MSG may lead to many neurological disorders(神經(jīng)紊亂).In mice studies done by a university, the evidence showed the mice didn’t want to eat the food including MSG.
Today many food companies “hide” MSG on food labels(標(biāo)簽) by using different names. If you see “natural flavorings”,“hydrolyzed protein”and “spices” in a food label, you are probably seeing a hidden way to “report” MSG in a food label. Every time we have a meal in a restaurant, we always feel the food very delicious to taste, but sometimes it is dangerous for our health because some poisonous food additives have been added to the food.
To protect people’s health, our governments, from central to local, are taking actions to stop factories producing poisonous food additives.
小題1: Monosodium Glutamate is _______
A．a(chǎn) foodB．a(chǎn)n additiveC．a(chǎn) factoryD．a(chǎn) country
小題2:MSG is often used in ______.
A．frozen meatsB．cupsC．clothesD．book covers
小題3:The examples in the second paragraph tell us ________.
A．the food including MSG is deliciousB．people like to eat in a restaurant
C．mice like eating the food including MSGD．MSG is not safe sometimes
小題4:If you see “natural flavorings”,“hydrolyzed protein” and “spices” in a food label, you will know ­­­­­­­_____________.
A．you must eat the food in a hidden way
B．the food label must be hidden
C．MSG is probably added to the food
D．you must report the food to your parents
小題5:The underlined word “substance” in the article means __________.
A．colourB．materialC．tasteD．food

小題1:B
小題1:A
小題1:D
小題1:C
小題1:B
【主旨大意】本文介紹了味精的優(yōu)點(diǎn)和害處。
小題1:從短文第一句“MSG(monosodium glutamate) is a food additive”得出答案。
小題1:從這句話“It is used in foods around the world such as cakes, bread, frozen meats, fish and vegetables.”得出答案。
小題1:從此句“Scientists think that MSG may lead to many neurological disorders(神經(jīng)紊亂).”得出答案。
小題1:從這一句“If you see “natural flavorings”, “hydrolyzed protein” and “spices” in a food label, you are probably seeing a hidden way to “report” MSG in a food label.”得出答案。
小題1:根據(jù)句意，得知意為“物質(zhì)”。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：不詳 題型：閱讀理解

Can plants eat people? Probably not，but there are many plants that eat meat．Some of them are big．And they can eat small animals．One famous meat-eating plant is the Venus flytrap(捕蠅草)．
The Venus flytrap is a very strange plant．It grows in dry parts of the United States．Its leaves are like the pages of a book．They can open and close very quickly．Inside the leaves，there are three small hairs．If a fly touches one of the hairs，the leaf closes quickly．The fly cannot get out．In about half an hour，the leaf presses the fly until it is dead．Then，the plant covers the fly．Slowly，the plant eats the fly．
Why do plants do it? Most plants get what they need from the sun，the air，and the ground．In some places，the ground is very poor．It doesn’t have all these important things，
especially nitrogen(氮)．Animal meat has a lot of nitrogen， so some plants eat meat to get what they need．Let’s hope that some of the bigger plants don’t get the same idea !
小題1:The Venus flytrap is a kind of_________．
A．plantB．a(chǎn)nimalC．foodD．meat
小題2:The Venus flytrap grows in_________．
A．most parts of the worldB．some parts of Africa
C．dry parts of the United StatesD．wet parts of England
小題3:From the passage，we learn that_________．
A．a(chǎn)ll plants can eat peopleB．a(chǎn)ll plants can eat animals
C．some plants can eat peopleD．some plants can eat animals
小題4:The underlined word“presses”probably means________ in Chinese．
A．?dāng)D壓B．關(guān)上C．打開D．松開
小題5:—Why do some plants eat animal meat? —Because_________．
A．plants are dangerous to animals
B．a(chǎn)nimals are dangerous to plants
C．plants want to get what they need from animal me
D．plants want to protect themselves against animals

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Do you want to be the most popular person in the class? You don’t need to change your character; you just need to improve your personality (人格). In fact, people trust and love the most popular people because they stay normal but still have something that makes them different from the rest of us. Here are some pieces of advice about becoming the most popular person in the class.
◆If you want others to like and respect (尊重) you, you have to start by liking and accepting yourself. Do not change yourself in order to please others.
◆Be helpful to everyone and do it happily. Being nice to people is almost like helping them, because by being nice you make others happy.
◆Be active and have a positive view towards life. Develop confidence in yourself.
◆Stay clean and wear fresh clothes. Do not try to follow fashion to please others.
◆Big words and power cannot bring you respect. You have to get it by being honest. It also helps your personal growth. You must be a person that can be trusted to get respect.
小題1:If you want to become the most popular person, you should __________.
A．improve your personalityB．trust and please others
C．change your characterD．make yourself different from others
小題2:According to the article, __________ can bring you respect.
A．following fashionB．using big words
C．being honest and helpfulD．saying hello to others every day
小題3:The underlined sentence shows that __________.
A．you should be polite when you help othersB．you should make yourself happy[
C．we can help others only by being happyD．you should always be nice to others

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

You are probably familiar with the saying：An apple a day keeps the doctor away. A recent research carried out by the Chinese University of Hong Kong may change the saying:
An apple a day may keep aging away.
The research chose fruit flies(果蠅), as they share many genes(基因)with humans. The fruit flies were either fed normally or had an apple extract(濃縮物) added to their diet.
It turned out that those fruit flies that were given apple extract lived about 55 days—five days longer than the flies that were normally fed. The research group also found it easier for the flies to walk，climb and move about as they aged.
According to the result, the researchers believed that the antioxidants(抗氧化劑) in the apple extract helped clean up dangerous chemicals(化學(xué)物質(zhì)) that cause illnesses，as well as aging.
In another study，researchers examined diets of thousands of women. They discovered that those who regularly ate apples were 20 percent less likely to suffer heart illnesses and stroke.
The apples’ genetic code(遺傳密碼) was discovered recently. It allows scientists to develop nicer and healthier fruits. Researchers are already using the information to grow a kind of apples full of antioxidants that can keep eyes and joints healthy and protect humans against heart illnesses and cancer.
Apples that kill the desire(欲望) to eat could also be produced, with the first“extra-healthy’’apples on supermarket shelves within just four or five years.
The team that keeps studying apple DNA includes 100 scientists from five countries. Their research also suggests that around 65 million years ago, when dinosaurs began to die off the plant，which would finally become today’s apple tree, experienced a great genetic change. The number of many of its genes doubled. The extra genes allowed the apple to get used to worse conditions and go through a different development from peaches，strawberries and other related fruits.
小題1:Why were fruit flies used for the research?
A．Because they have a similar diet to humans.
B．Because they have a history as long as apples.
C．Because they share a lot of genes with humans.
D．Because they feed on nothing but apple extract.
小題2:What result did the researchers find out?
A．Apples produce chemicals that can change human genes.
B．Apples have antioxidants that kill chemicals that cause aging.
C．Apples are rich in vitamins that are needed in humans’bodies.
D．Apples produce chemicals that make apples taste more delicious.
小題3:What happened to apples around 65 million years ago according to the research?
A．Their genes stopped their development as the environment got worse.
B．Their genes became twice in number but they finally died off like dinosaurs.
C．They experienced a great genetic change making them used to worse conditions.
D．They went through a similar development to peaches, strawberries and other related fruits.
小題4:What can we infer(推斷)from the passage?
A．Eating apples may bring us more advantages than we might believe before.
B．People who have the habit of eating apples don’t need to see a doctor.
C．Apples that kill the desire to eat are already available in supermarkets now.
D．People will eat apples instead of peaches and strawberries from now on.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Who do you admire(崇拜)?Different people may have different ideas.
If you’re a sports fan, perhaps the person you admire most is a great basketball player, and Yao Ming is probably the one in your mind. If you study music or play an instrument, perhaps the person you admire most is gifted musician like Mozart, who began to write beautiful music at a very young age. Or maybe you admire great scientists, for example, Yuan Longping.
We have many reasons to admire famous people and we often give much of our respect to them. However, we shouldn’t neglect those who are common, such as nurses, train drivers, firemen, cleaners and so on. They may be working in a corner of the world without being noticed, but all these people spend their working days serving the public. They show great dedication(奉獻(xiàn)).However, what they do is often unnoticed by us. Have you ever thought of what our life will be like if they stop working?
So next time when you appreciate famous people, don’t forget those who are common around you.
根據(jù)短文內(nèi)容，選擇正確的答案。（5小題，每小題2分，共10分）
小題1:Yao Ming is a great ______.
A. pop singer                B. actor                C. basketball player
小題2:Mozart began to write ______ when he was very young.
A. music                 B. letters              C. books
小題3:The underlined word“neglect”in Paragraph 3 means______.
A. give comments on         B. make fun of          C. care little about
小題4:In Paragraph 3,the writer mainly points out ______.
A. the reasons why we admire famous people
B. the importance of common people’s work
C. the places where common people are working
小題5:What’s the main idea of this passage?
A. Famous people are admired by most of us in our life.
B. Common people should also be given respect as the famous ones.
C. Common people should be given the most respect in our society.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Children arc children after all, and most of them speak their mind. When they are just toddlers(幼兒), they are all lovely and lively. And it's so interesting to watch them speak like a grown-up. But as they grow, these same kids seem annoying and ill-mannered if they try to be a grown-up.
Conflicts(矛盾）go between parents and children. It's hard to tell who are right and who are wrong. A child of 7-8 always finds some reasons to have a conflict with it's parents. Whether it is about some toy, studies, a party or a company, there is always a difference between them. And it becomes worse when they answer you back. Scientists tell us that children should be treated with care. Yes, sure they should respect their elders.
We are partly responsible(有責(zé)任的）for this. At an early age we encourage children to behave like adults, just because we find it funny. The kids on the other hand consider this same behavior as normal and get used to it. And when it is not funny for us any more, we expect them to stop it, but by then it is already too late. Only when they reach a certain maturity will the children realize that answering back and being rude are not acceptable(可接受的).Until then, most of the time their behavior is difficult to change, unless by force(暴力）.And use of force is against the every good idea, as it weakens the child's confidence.
So it is one thing to bring a child into this world but quite another to make them into well mannered citizens. The best way is to be a good example ourselves, as our children are the mirrors of us adults.
小題1:_______are all lovely and lively.
A．Children B．ToddlersC．KidsD．Grown-ups
小題2:There are many conflicts between   ______.
A．fathers and mothersB．parents and children
C．parents and toddlers D．parents and parents
小題3:The underlined word "maturity" means________.
A．學(xué)期B．階梯C．知識D．成熟
小題4:Which is acceptable according to the passage?
A．Answering back .B．Being rude.
C．Using force. D．Respecting elders.
小題5:Which of the following is true?
A．Children often copy what their parents do.
B．Children can not change their behavior.
C．Children's behavior develops in their own way.
D．Children's behavior is not acceptable.
小題6:The writer wrote the passage__________.
A．to show the importance of good examples
B．to give examples on educating children
C．to show the growth of children
D．to show the behavior of children

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

The earth moves round the sun, and the moon moves round the earth. When our part of the earth turns to the moon, it is night.
The sun is much bigger than the moon. But sometimes the moon looks bigger than the sun, because it’s much nearer to the earth.
The sun is very bright. It gives a very strong light. The moon looks quite bright,  too. But it doesn’t give any light at all.
The moon looks much bigger and brighter than the stars. But actually the stars are much bigger and brighter than the moon. They look smaller than the moon because they’re much farther away from us.
Read and choose the right answer
小題1:____moves round________.
A．The earth; the moonB．The moon; the earth
C．The moon; the starsD．The sun; the earth
小題2:Sometimes the moon looks bigger than the sun, because_________.
A．it is much bigger than the sun
B．it comes out only at night
C．it is much nearer to the earth than the sun
D．it doesn’t give a strong light
小題3:The sun_______________.
A．is very bright, and it gives a very strong light
B．isn’t bright, but it gives a very strong light
C．is very big, but it doesn’t give any light at all
D．is very round, but it can’t move round
小題4:The stars______________.
A．look much bigger than the moon
B．look much bigger than the sun
C．a(chǎn)re a lot brighter than the moon, but they are not bigger than the moon
D．a(chǎn)re much farther away from us than the moon

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Emma and Hannah are 13–year–old school girls from Minnesota,USA.They are good at making new thing s and both of them are also good at sales.They are selling charms(小裝飾物) made out of bottle caps.
The girls came up with the idea last summer when they saw charms were popular with kids.
They talked with their parents about the idea.Since then they have sold enough charms to buy a bike for Hannah.
The girls collect bottle caps and then clean them.They find some interesting pictures on the Internet or on paper,and then glue them onto the inside of the caps.There are different kinds of pictures,“Peace signs are popular with girls,and single–letter charms are popular with boys whose names start with those letters,”Emma and Hannah said.
Now,charms can be found everywhere at Dakota Hills Middle School in Eagan.“Students put charms on purses,backpacks ,and their lunchboxes,”said Emma.Emma and Hannah also have a shop on the Internet.They hope they can sell their charms to more kids.They’re thinking about selling their charms at the Eagan Market Festival next summer.
Their business is not only for getting money.At their Valentine’s sale,20%of the income( 收入) went to charity.
小題1:What are Emma and Hannah?
A．They’re waiters.B．They’re sellers.
C．They’re students.D．They’re charm makers.
小題2:When did the girls begin to sell the charms?
A．About a year ago.B．About two months ago.
C．Nearly fifty days ago.D．Nearly five weeks ago.
小題3:Which of the following may NOT be on the charms?
A．Pictures.B．Signs.C．Letters.D．Numbers.
小題4:What do Emma and Hannah hope to do now?
A.They hope to become rich people.      B.They hope to give money to charity.
C.They hope to sell more charms.        C.They hope to sell charms in every school.
小題5:Which of th following is TRUE?
A．The two girls love their parents and money.
B．Boys like charms with signs.
C．They won’t sell charms next smmer.
D．The charms are popular with students.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

The good things about computer games
They’re fun!
They can improve hand-eye coordination. That means you can think and do things more quickly.
You feel good when you can move up levels and see how well you’re doing.
Most games make you think about what you’re going to do, and they can help you improve the ability (能力) of solving problems.
You can play games on the Internet with people from all over the world.
Anyone can play computer games, even if they aren’t very good at sports, have a disability, or find it hard to talk to others.
The bad things about computer games
Kids may start hitting others in their lives just as they do in games because they may think it’s OK to hit others, or to talk to people, including their parents and teachers, impolitely.
If kids play games for a long time, they may not go out and exercise. They may start eating snacks while they play games and they will become too fat. Doctors are worried about kids that play too many computer games.
Playing games is a big problem for some people. They will play or think about games when they have time. This means they may stop talking with others and become really boring people.
小題1:How many good things about computer games does the writer mention?
A．Three.B．Six.C．Seven. D．Nine.
小題2:What does the underlined word “coordination” mean in Chinese?
A．協(xié)調(diào)B．障礙C．舒適D．問題
小題3:If you play computer games all the time, you may become a(n) ______ person.
A．healthy, impolite and boringB．healthy, polite and boring
C．unhealthy, polite and boringD．unhealthy, impolite and boring
小題4:Which of the following is NOT true according to this passage?
A．Most games are good for your ability of solving problems.
B．You can’t play games with strangers on the Internet.
C．Playing too many computer games may make you fat.
D．Playing games can also cause many problems.
小題5:The passage is mainly about       .
A．the two sides of computer games
B．how to improve your computer games skills
C．playing computer games with others
D．some interesting things about computer games

查看答案和解析>>

同步練習(xí)冊答案