题目内容

Lakshmi grew up in India in the first half of the twentieth century, seeing many people around her who did not get enough food, were often sick and died young.

In the 1960s, was asked to help manage a program to improve nutrition in her country. At that time, most advice on nutrition came from North American and European countries. Nutritionists suggested foods that were common and worked well for people who lived in these nations.

For example, they told poor Indian women to eat more meal and eggs and drink more orange juice. But Lakshmi knew this advice was useless in a country like India. People there didn’t eat such foods. They weren’t easy to find. And for the poor, such foods were too expensive.

Lakshmi knew that for the program to work, it had to fit Indian culture. So she decided to adjust the nutrition program. She first found out what healthy middle-class people in India ate. She took note of the nutrients (营养物)available in those foods. Then she looked for cheap, easy-to-find foods that would provide the same nutrients.

She created a balanced diet of locally grown fruits, vegetables, and grains. These foods were cheap and could be cooked with simple equipment. Her ideas were thought unusual in the 1960s. For example, she insisted that a diet without meal could provide all major nutrients. Now we know she was right. But it took her continuous efforts to get others to finally accept her diet about 50 years ago. Because of Lakshmi’s program, Indian children almost doubled their food intake. And many children who would have been hungry and ill grew healthy and strong.

1.Why did Lakshmi think European nutritionists’ advice was useless?

A. It worked well for European people.

B. It suggested too many foods for Indians.

C. It was not practical in India at that time.

D. It included foods that didn’t exist in India.

2.Lakshmi studied healthy middle-class people’s diet in order to .

A. know about their eating habits B. learn about Indian culture

C. find out nutrients in their food D. write a report on food nutrients

3.Lakshmi’s balanced diet was considered unusual because people thought .

A. those foods were too cheap B. it should include some meat

C. it provided all major nutrients D. it enabled kids to grow healthy

4.What can we infer about Lakshmi?

A. She came from a rich family.

B. She disliked middle-class people.

C. She worked with European nutritionists.

D. She was a determined scientist.

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When a leafy plant is under attack ,it doesn’t sit quietly. Back in 1983,two scientists,Jack Schultz and Ian Baldwin,reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm.What the plants pump through the air is a mixture of chemicals known as volatile organic compounds,VOCs for short.

Scientists have found that all kinds of plants give out VOCs when being attacked .It’s a plant’s way of crying out.But is anyone listening?Apparently.Because we can watch the neighbours react.

Some plants pump out smelly chemicals to keep insects away.But others do double duty .They pump out perfumes designed to attract different insects who are natural enemies to the attackers.Once they arrive,the tables are turned .The attacker who was lunching now becomes lunch.

In study after study,it appears that these chemical conversations help the neighbors .The damage is usually more serious on the first plant,but the neighbors ,relatively speaking ,stay safer because they heard the alarm and knew what to do.

Does this mean that plants talk to each other? Scientists don’t know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear” the cry. So information was exchanged, but it wasn’t a true, intentional back and forth.

Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate(亲密的) than the world we can see and hear. Our senses are weak. There’s a whole lot going on.

1.What does a plant do when it is under attack?

A. It makes noises. B. It gets help from other plants.

C. It stands quietly D. It sends out certain chemicals.

2.What does the author mean by “the tables are turned” in paragraph 3?

A. The attackers get attacked.

B. The insects gather under the table.

C. The plants get ready to fight back.

D. The perfumes attract natural enemies.

3.Scientists find from their studies that plants can .

A. predict natural disasters B. protect themselves against insects

C. talk to one another intentionally D. help their neighbors when necessary

4.what can we infer from the last paragraph?

A. The word is changing faster than ever.

B. People have stronger senses than before

C. The world is more complex than it seems

D. People in Darwin’s time were more imaginative.

You may have grown up living with sisters and brothers, or this may be your first time sharing your living space with someone else. Having a roommate surely has its challenges. 1. Follow these tips to make sure you and your roommate keep things pleasant and supportive throughout the year.

Be clear from the beginning.

Maybe you hate it when someone interrupts you when you are sleeping every morning. 2., Let your roommate know about your preferences. It’s not fair to expect him or her to pick up on them right away, and communicating what you need is one of the best ways to get rid of problems before they become problems.

Respect your roommate’s things.

This may seem simple,but it’s probably one of the biggest reasons why roommates experience conflicts. Don’t you think he’ll mind if you borrow his shoes for a quick soccer game for all you know, you just stepped over an uncrossable line.3.

Be open to change.

You should expect to learn and grow and change during your time at school. And the same should happen to your roommate, if all goes well. 4.. Be comfortable addressing things that unexpectedly come up, setting new rules, and being flexible to your changing environment.

5.

Treat your roommate like you’d like to be treated. No matter what your relationship is at the end of the year, you can take comfort knowing you acted like an adult and treated your roommate with respect.

A. Don’t borrow, use, or lake anything without getting permission first.

B. As the term progresses, realize things will change for both of you.

C. Getting along well with a roommate is really a difficult job.

D. Maybe you need moments to be silent after you wake up.

E. You should correct your bad habits first.

F. Follow the Golden Rule.

G. However, it can also be a great part of your college experience.

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