MSG(monosodium glutamate) is a food additive(食品添加剂),which has been widely used b - 初中英语试题 - 超级试练试题库

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MSG(monosodium glutamate) is a food additive(食品添加剂),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(反应) 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(神经紊乱).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(标签) by using differe

nt 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.
小题1: Monosodium Glutamate is _______

A．a food

B．an additive

C．a factory

D．a country

小题2:MSG is often used in ______.

A．frozen meats

B．cups

C．clothes

D．book covers

小题3:The examples in the second paragraph tell us ________.

A．the food including MSG is delicious	B．people like to eat in a restaurant
C．mice like eating the food including MSG	D．MSG is not safe sometimes

小题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

小题5:The underlined word “substance” in the article means __________.

A．colour

B．material

C．taste

D．food

答案

小题1:B
小题1:A
小题1:D
小题1:C
小题1:B

解析

【主旨大意】本文介绍了味精的优点和害处。
小题1:从短文第一句“MSG(monosodium glutamate) is a food additive”得出答案。
小题1:从这句话“It is used in foods around the world such as cakes, bread, frozen meats, fish and vegetables.”得出答案。
小题1:从此句“Scientists think that MSG may lead to many neurological disorders(神经紊乱).”得出答案。
小题1:从这一句“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。
小题1:根据句意，得知意为“物质”。

核心考点

试题【MSG(monosodium glutamate) is a food additive(食品添加剂),which has been widely used b】；主要考察你对科普环保类等知识点的理解。[详细]

举一反三

In Chicago, a computerized system has been developed that controls(管理)traffic on the city’s 235 miles of seven expressways. Now one—a controller—can follow the movement of Chicago’s traffic by looking at a set of lights. The system uses electric sensors(感应器) that are built into each expressway, every half a mile. Several times a second, the computer receives information from each sensor and translates it into green, yellow or red lights on a map in the control room. A green light means traffic is moving forty-five miles an hour, yellow means thirty to forty-five miles an hour, and red means heavy traffic—cars standing still or moving less than thirty miles an hour.
“See that red light near Austin Avenue?”the controller asked a visitor.“That’s a repair truck fixing the road, and the traffic has to go around it.”At the Roosevelt Road entrance to the expressway, the light kept changing from green to red and back to green again.“A lot of trucks get on the expressway there,”the controller explained.“They can’t speed up as fast as cars.”The sensors show immediately where an accident or a stopped car is blocking the tr

affic, and a truck is sent by radio to clear the road. The system has lowered the number of accidents by 18 percent. There are now 1.4 deaths on Chicago’s expressway for each one hundred million miles traveled, while in other parts of the county there are 2.6.
Traffic experts say that the Chicago system is the “coming thing”.Systems like Chicago’s are already in use on some expressways in Los Angeles and Houston.“Chicago has taken the lead,”said New York City’s traffic director and he added,“Chicago’s a good example.”
根据短文内容，选择最佳答案，并在答题卡上按要求作答。
小题1:The passage is mainly about ________ on expressways in Chicago.

A．the traffic control system	B．the movement of the traffic
C．the electric sensors	D．the traffic lights

小题2:When the cars move under 30 miles an hour, ________ on the map in the control room.

A．the red light appears	B．the red light turns yellow
C．the yellow light appears	D．the green light turns red

小题3: According to the passage, we may learn __________.

A．some visitors are traveling on the expressway

B．there is no heavy traffic on Chicago’s expressways

C．the traffic on Chicago’s expressways is well managed

D．the number of accidents in the US has dropped by 18%

小题4:In Paragraph 2 the underlined word “it” refers to ___________.

A．the red light	B．the truck that needs repairing
C．the traffic	D．the truck that is fixing the road

小题5:The writer writes the article mainly by _________.

A．giving reasons and results	B．giving examples and explaining them
C．describing what he thinks	D．asking and answering questions

题型：不详难度：| 查看答案

Who taught you to walk when you were little? Who worries the most when you are   56 ? Who makes you dinner? It’s your   57  . No matter what happens, she’ll   58  the love for you.
Do you know how did   59    Day come into being(产生) ? It began in the US in 1907 whenan    60   girl named Anna Jarvis started a campaign to honor(给......以荣誉) mothers. Shebelieved that mothers could   61  people to get over the   62  of the War and to strengthen (加长) the relationship inside families.
On Mother’s day, children usually help their mothers do    63  . In western countries, bringing mothers 64  in bed is common. A mother will get up late while her children make her favorite breakfast. Children also make their own Mother’s Day card    65  a thank-you note. Or they buy gifts and flowers for their mothers.
小题1: A. lazy B. ill C. sleepy
小题2:A. father B. mother C. sister
小题3: A. continue B. stop C. start
小题4:A. Children’s B. Women’s C. Mother’s
小题5: A. Asian B. Australian C. American
小题6:A. help B. ask C. order
小题7:A. worry B. pain C. memory
小题8: A. homework B. housework C. hair
小题9: A. flowers B. clothes C. breakfast
小题10: A. with B. for C. from

题型：不详难度：| 查看答案

How do you like to go to school like this one in Oxford, England? There are no real classes. The students go from one group to another when they want to. You may find students of fourteen, sixteen or twenty - one years old all in the same group. They work at their own studies. Nobody tells them what they should do or what they shouldn’t do.
The day I visited, school began at nine. Some students were listening to their own lessons. Others were watching TV on physics. A group was working in the library. I didn’t see anybody just sit doing nothing. Everybody was studying.
At lunch time I could see students working, too. They were talking about their lessons while they were eating. When you think of those students, you can be sure it is one of the best schools in the world.
小题1:In this school in Oxford, the students _______.
A. are all teenagers
B.     don" t study in groups
C.     never study in any real classes
小题2:Every student is working at _______in this school.
A.      the same thing
B.       a different thing
C.       his or her own studies
小题3:It is true that_______.
Ahis school is one of the best schools in the world
Bhe students in this school like to study in the same group
Che students in this school learn everything by discussing with others

题型：不详难度：| 查看答案

To most of us, school means classes, teachers, schedules, grades and tests. But for the children at Sudbury Valley School in Massachusetts, school is very different.

Firstly, there are no lessons. All the children, aged between 4 and 19, do whatever they want. There are no teachers, only “staff members”. The idea behind this is that you do not need to make children learn, because children want to learn anyway. “You do not need to say to a three-year-old, ‘Go explore your environment.’ You can’t stop them!”says Daniel Greenberg, a founder of the school. “But if you make children do what you want all day… they will lose all taste of learning.” At Sudbury Valley School, you will find children talking, reading, painting, cooking, working on computers, studying French, playing the piano, climbing trees, or just running around. Two boys spent three years just fishing!
The other way that Sudbury Valley School is different is that the children can decide the rules. Every week, there is a school meeting where both children and staff have one vote (投票)each—even the four-year-olds. They decide the school rules, how to spend the school money, and even which staff they want and do not want anymore.
When the school first opened in 1968, people said it would never work. But today, the school h

as 200 students, and 80% of its students go on to college. Even the two boys who went fishing all the time have successful careers today. One of them is a musician and the other is a computer scientist.
小题1:What"s special about the school?

A．There is nobody but students there.

B．All the students are of the same age.

C．There are no classes for the students.

D．There are no rules in the school.

小题2:What do the students do in the school?

A．They learn everything there from the staff members.

B．They grow up there without learning anything.

C．They spend all the time with their parents.

D．They do whatever they are interested in.

小题3:The school seems to believe that children________.

A．learn best when they are doing what they want

B．are too young to learn anything by themselves

C．can look after themselves without any help

D．can"t go to college without any hard work

小题4:The last paragraph wants to tell us that_ .

A．the writer doesn"t like the idea of the school

B．the school is quite successful in its work

C．most of the parents don"t believe in the school

D．younger students learn bet

ter there than older ones

小题5:The underlined word career in the last paragraph most probably means_.
A. family B. money C. lifestyle d. job

题型：不详难度：| 查看答案

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(奉献).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.
根据短文内容，选择正确的答案。（5小题，每小题2分，共10分）
小题1:Yao Ming is a great ______.
A. pop singer                B. actor                C. basketball player
小题2:Mozart began to write ______ when he was very young.
A. music                 B. letters              C. books
小题3:The underlined word“neglect”in Paragraph 3 means______.
A. give comments on         B. make fun of          C. care little about
小题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
小题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.

题型：不详难度：| 查看答案

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