Recently some American scientists have given a useful piece of advice to people in industrialized nations．They say people should eat more of the same kind of food eaten by humans living more than 10, 题目和参考答案——青夏教育精英家教网—

题目内容

Recently some American scientists have given a useful piece of advice to people in industrialized nations．They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago． 1

The scientists say that the human life has changed greatly．Our bodies have not been able to deal with these changes in lifestyle and this had led to new kinds of sicknesses． 2 So they are called "diseases of civilization"．Many cancers and diseases of the blood system are examples of such diseases．

Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco, probably none． 3 However, a change in food is one of the main differences between life in ancient times and that of today．

Stone Age people hunted wild animals for their meat, which had much less fat than domestic ones．They ate a lot of fresh wild vegetables and fruits．They did not have milk or any other dairy products, and they made very little use of grains． 4 We eat six times more salt than our ancestors．We eat more sugar．We eat twice as much fat but only one third as much protein and much less vitamin C．

5 But scientists say that we would be much healthier if we eat much the same way the ancient people did, cutting the amount of fatty, salty and sweet food．

A．Stone Age people lived a simple life．

B．But today, we enjoy eating a lot of these．

C．In that case, they would live much healthier．

D．Ancient people also got lots of physical exercise．

E．These new sicknesses were not known in ancient times．

F．People today probably don't want to live like our ancestors．

G．Modern people used to suffer from "diseases of civilization"．

CEDBF

练习册系列答案

相关题目

When people talk of a virus these days, chances are that they are talking about computer virus that have the power wipe out all the valuable work people may have stored in their computers. Imagine, the virus has the power to make military systems, giant banks, airports, hospitals and traffic system come to stop!
What does a computer virus do? It targets electronic objects that are programmed. The virus spreads through connections between these electronic objects. For virus spreading experts, e-mail is a favorite method of sending their destructive (破坏性的) weapon.
But scientists warn that this is not the worst that can happen. There is more. People are also connected through phones. The next virus may actually target mobile phones, especially those that are programmed to do many tasks apart from just communicating. It would then be easy for a virus to infect those programs and create major disorder.
For example, these virus may have the power to record your phone conversations and make others hear them. They create problems with your electronic money accounts, or they could create a mountain of telephone bills for calls you never made. And that would be a disaster. A report on this was published in the New Scientist recently.
One way out would be to have simpler phones with not so many different functions. This would mean there would mean there would be fewer programs for the virus to attack. But mobile phone producers are in a fix. People on longer want an electronic item to perform just one task. They want more and more functions added. That would mean more software programs to make the mobile phone perform all those functions. And that means the possibility of more viruses.
【小题1】It can be inferred from the passage that ______.

A．computer viruses are not so as destructive as mobile phone viruses

B．people should be careful when receiving e-mails

C．people find it difficult to use electronic equipment correctly

D．having electronic money accounts brings people a lot of convenience

【小题2】Which of the following shows that your mobile phone is infected with a virus?

A．You can’t hear the person who answers the phone clearly

B．You can’t send e-mails with your mobile phone

C．your phone bill increases for unknown reasons

D．You can hear other people’s phone conversations

【小题3】What does the underlined sentence in the last paragraph mean?

A．Mobile phone producers have made no progress.

B．Mobile phone producers are proud of their products.

C．Mobile phone producers are faced with a difficult situation.

D．Mobile phone producers refused to fight against virus.

【小题4】For whom is the passage written?

A．Government officials	B．Virus spreading experts
C．Electronic scientists	D．Mobile phone users

Nervous suspects (嫌疑犯) locked up in Britain's newest police station may feel relieved by a pleasant yellow color on the door. If they are close to confessing（供认，坦白） a crime, the blue on the wall might tip the balance.
Gwent Police have abandoned colors such as grays and browns of the 20th-century police cell (牢房) and have used color psychology（心理学） to decorate them.
Ystrad Mynach station, which recently opened at a cost of ￡5 million, has four cells with glass doors for prisoners who suffer from claustrophobia(幽闭恐怖症). Designers have painted the frames yellow, which researchers say is a calming color. Other cells contain a royal blue line because psychologists believe that the color is likely to encourage truthfulness.
The station has 31 cells, including 12 with a “live scan” system for drunken or disturbed prisoners, which detects the rise and fall of their chest. An alarm alerts（报警） officers if a prisoner's breathing stops and carries on ringing until the door is opened.
Designers and psychologists have worked for years on color. Blue is said to suggest trust, efficiency, duty, logic, coolness, thinking and calm. It also suggests coldness and unfriendliness. It is thought that strong blues will stimulate clear thought and lighter, soft colors will calm the mind and aid concentration.
Yellow is linked with confidence, self-respect and friendliness. Get the color wrong and it could cause fear, depression and anxiety, but the right yellow can lift spirits and self-respect.
Ingrid Collins, a psychologist who specializes in the effects of color, said that color was an “energy force”. She said: “Blue does enhance communication but I am not sure it would enhance truthful communication.”
Yellow, she said, affected the mind. Red, on the other hand, should never be considered because it could increase aggression（攻击性）. Mrs. Collins praised the designers for using colors in the cells. Gwent is not the first British force to experiment with color to calm down or persuade prisoners to co-operate. In the 1990s Strathclyde Police used pink in cells based on research carried out by the US Navy.
49. The expression “tip the balance” in paragraph 1 probably indicates that the blue might _____.
A. let suspects keep their balance     B. help suspects to confess their crimes
C. make suspects cold and unfriendly in law court  D. enable suspects to change their attitudes to colors
50. Which of the following colors should NOT be used in cells according to the passage?
A. Pink.      B. Yellow      C. Blue.     D. Red.
51. Which of the following helps alert officers if someone stops breathing?
A. Scanning equipment. B. Royal blue lines. C. Glass doors.     D. Yellow frames.
52. The passage is mainly concerned with _____.
A. the relationship between colors and psychology
B. a comparison of different functions of colors
C. the use of colors in cells to affect criminals’ psychology
D. scientific ways to help criminals reform themselves in prison

Two magazines recently listed the best cities to live in. Here are two of the cities listed as “the world’s best.”
SAN JOSE, COSTA RICA The city has comfortable weather all year round (15°C to 26°C ). Housing is not very expensive in San Jose. Also, many of the city’s older neighborhoods are very beautiful and have small hotels and cafés(咖啡馆). Beautiful mountains are around the city. You can visit them easily from San Jose. So lots of people go sightseeing there every year. But air pollution is a problem in the city center.
HONG KONG, CHINA This lively city—once a small fishing village—is today an international business center. It is an interesting mix of East and West, old and new. Modern tall buildings are next to small temples (庙宇). Popular nightclubs are close to traditional teahouses. Busy people fill the streets at all hours of the day. But outside the city, there are parks for walking or relaxing. Hong Kong is famous for its wonderful native dishes. There’s also food from Europe, North America, and other parts of Asia. However, this small city has a large population. Nearly seven million people live in Hong Kong! That’s why housing is often very expensive. Traffic and air pollution are also a problem.
56. Which of the following is not mentioned about San Jose?
A. The weather.                B. The mountains.        C. The air.        D. The traffic.
57. What makes Hong Kong the world’s best according to this passage?
A. The lively city and the wonderful dishes. B. The beautiful mountains and the lively city.
C. The expensive housing and the food.          D. The city and the people.
58. The writer thinks housing in Hong Kong is expensive because     .
A. it was a small fishing village            B. it is a mix of East and West
C. it is famous for its wonderful food      D. there are too many people in the city
59. What do the two cities have in common?
A. They both have beautiful mountains.    B. They both have a large population.
C. Air pollution is a problem in both.       D. They are both crowded.
60. From the passage, we can know that     .
A. San Jose and Hong Kong are the only two cities of the world’s best
B. San Jose has more natural sights than Hong Kong does
C. the weather in both cities is fine
D. Hong Kong is the more popular city of the two

I am a mother of three and have recently completed my college degree. My teacher’s last 36 of the term was called “ Smile”. I am a very friendly person and always 37 at everyone. So I thought this would be very 38 .
Soon after we were given the project, my 39 went out to McDonald’s. We were waiting to be 40 , when all of a sudden everyone around us began to 41 , and even my husband did. There standing behind me were two homeless men 42 .
As I looked down at the short gentleman with 43 eyes, he said, “Good day.” The second man stood behind his friend. I 44 the second man was mentally challenged(智障) and the blue-eyed gentleman was his helper.
The young 45 at the counter asked him what they wanted.
He said, “Coffee is all, Miss.” Because that was all they could 46 .
I smiled and asked the young lady to give me two more breakfast meals on a 47 tray(托盘). I then said to the men, “ I did not do this for you. God is here 48 through me to give you hope.”
When I joined my husband, he smiled at me, saying, “That is 49 God gave you to me, Honey, to give me hope.”
I returned to 50 with this story in hand. I 51 “my project” and the teacher read it. Then she looked up at me and said, “Can I 52 this with the class?”
I slowly 53 and she began to read and that was when I knew that we, as human beings, share this to help people and to be 54 .
In my own way I had 55 the people at McDonald’s, my husband, sons, teacher, and every person that shared the classroom on the last night I spent as a college student.

When I was a boy growing up in New Jersey in the 1960s, we had a milkman delivering milk to our doorstep. His name was Mr. Basille. He wore a white cap and drove a white truck. As a 5-year-old boy, I couldn’t take my eyes off the coin changer fixed to his belt. He noticed this one day during a delivery and gave me a quarter out of his coin changer.
Of course, he delivered more than milk. There was cheese, eggs and so on. If we needed to change our order, my mother would pen a note—“Please add a bottle of buttermilk next delivery”—and place it in the box along with the empty bottles. And then, the buttermilk would magically（魔术般）appear.
All of this was about more than convenience. There existed a close relationship between families and their milkmen. Mr. Basille even had a key to our house, for those times when it was so cold outside that we put the box indoors, so that the milk wouldn't freeze. And I remember Mr. Basille from time to time taking a break at our kitchen table, having a cup of tea and telling stories about his delivery.
There is sadly no home milk delivery today. Big companies allowed the production of cheaper milk thus making it difficult for milkmen to compete (竞争). Besides, milk is for sale everywhere, and it may just not have been practiced to have a delivery service.
Recently, an old milk box in the countryside I saw brought back my childhood memories. I took it home and planted it on the back porch (门廊). Every so often my son's friends will ask what it is. So I start telling stories of my boyhood, and of the milkman who brought us friendship along with his milk.
【小题1】Mr. Basille gave the boy a quarter out of his coin changer .

A．to show his magical power	B．to pay for the delivery
C．to satisfy his curiosity	D．to please his mother

【小题2】What can be inferred from the fact that the milkman had the key to the boy's house?

A．He wanted to have tea there.	B．He was a respectable person.
C．He was treated as a family member.	D．He was fully trusted by the family.

【小题3】Why does home milk delivery no longer exist?

A．Nobody wants to be a milkman now.	B．It has been driven out of the market.
C．Its service is getting poor.	D．It is forbidden by law.

【小题4】Why did the author bring back home an old milk box?

A．He missed the good old days.	B．He wanted to tell interesting stories.
C．He needed it for his milk bottles.	D．He planted flowers in it.

试题分类