内容正文:
Unit5复习材料
一.按提示填写相关短语及语法内容
A PIONEER FOR ALL PEOPLE
Yuan Longping, known as the “father of hybrid rice”, is one of China’s most famous scientists. Yet, he considers himself a farmer because he continually works the land in his research. Indeed, his ( 瘦削但强壮地的身体)is just like that of millions of Chinese farmers, to whom he has devoted his life.
Yuan Longping was born in 1930 in Beijing. His parents wanted him to pursue a career in science or medicine. However, what concerned him most was that farmers often had poor harvests and sometimes even had a serious shortage of food to eat.
(为了解决这个危机),he chose to study agriculture and received an education at Southwest Agricultural College in Chongqing.
After graduating in 1953, he (担任) a researcher. Yuan Longping realised larger fields were not the solution. Instead, farmers needed to ( 提高产量)in the fields they had. How this could be done was a challenging question at the time. Yuan (确信)the answer could be found in the creation of hybrid rice. A hybrid is a cross between two or more varieties of a species. One characteristic of hybrids is that they usually attain a higher yield than conventional crops. However, whether it was possible to develop a hybrid of self-pollinating plants such as rice was a matter of great debate. The (普遍的假设)then was that it could not be done. (经过热切的努力), Yuan (克服了巨大的技术难题)to develop the first hybrid rice that could be used for farming in 1974. This hybrid enabled farmers to (扩大他们的产量)greatly.
Today, (据估计)about 60 percent of domestic rice consumption in China (由...组成)crops generated from Yuan’s hybrid strains, and his strains have allowed China’s farmers to produce around 200 million tons of rice per year. Yuan’s innovation has helped feed not just China, but many other countries that (依赖) rice as well, such as India and Vietnam. Because of his (无价的贡献), Yuan Longping has received numerous awards both in China and abroad.
( 鉴于;考虑到) Yuan’s hybrids have made him quite wealthy, one might think he would retire to a life of leisure. However, this is (远非如此). (实际上;在内心深处), Yuan is still very much a farmer at heart. As a man of the soil, he cares little for (名誉或金钱)celebrity or money. Instead, he makes large donations to support agricultural research.
What impresses people most about Yuan Longping is his ongoing ability to fulfil his dreams. Long ago, he envisioned rice plants as tall as sorghum, with each ear of rice as big as a broom, and each grain of rice as huge as a peanut. He succeeded in producing a kind of rice could feed more people (在国内外)at home and abroad. His latest vision for “seawater rice” has also become a reality, and potentially opened up nearly one million square kilometres of salty land in China for rice production. Despite his advanced years, Yuan Longping is still young at heart and full of vision, and everyone is waiting to see what he will dream up next.
二.按提示填写相关短语及语法内容
CHEMICAL VERSUS ORGANIC FARMING
Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle of the 20th century. When they were first introduced, many farmers welcomed them as a great way to fight crop disease and increase production. (随着时间的推移), however, what some scientists have found is that their long-term use can sometimes harm both the land and people’s health.
For example, pesticides can damage the land by killing not only (有害的细菌和昆虫), but also helpful ones. In addition, these chemicals can stay in the soil and underground water sources for a long time. This affects the crops grown on the land and, (相应地;转而), the animals and humans ( digest them. Many people worry that these chemicals may make them ill and even cause cancer. In fact, some pesticides like DDT (已经被禁止)in most countries because of the damage they cause to people and the environment. (关于;至于)chemical fertilisers, crops grown with them usually grow (长得太快以至于无法富含营养). They may look beautiful on the outside, but inside there is usually more water than ( 必要的矿物质), and they often have less flavour as well.
As an alternative, some farmers (已经转向) organic farming, and many customers have turned to (有机食品)when they shop at the local grocery. Organic farming is simply farming without using any chemicals. Organic farmers (集中精力于)keeping their soil rich and free of disease through natural means. For example, many organic farmers use natural waste from animals as fertiliser. This makes the soil in their fields richer in minerals. It also keeps the air, soil, water, and crops free of chemicals.
Organic farmers also use many other methods to produce rich soil. They often change the kind of crop grown in each field every year. (例如), they may grow corn or wheat in a field one year, and then grow beans there the next. Why different crops are grown is because they put important minerals back into the ground, making it ready for the next batch of crops. Organic farmers also plant diverse crops that use different depths of soil to help keep it rich. For example, peanuts grow on the ground’s surface, but many other vegetables put down deep roots. The goal of using different organic farming methods is to grow good food while (避免对环境的损害)or to people’s health.
Some people would prefer to stop the use of man-made chemicals in agriculture entirely. What keeps them from doing so is the fact that chemical farming serves the high demand for food around the world. Organic farming is nowhere near able to (满足需求). Therefore, there is still a long way to find a suitable solution that puts sufficient food on the dinner table while keeping people and the environment as healthy as possible.
3. 用所给单词的正确形式完成句子。
overcome estimate extension
expand generate
1 .The school board plans to have a(n) built to the library.
2 .The new film a lot of excitement, and ticket sales were way beyond our expectations.
3 .Unable to his shyness, he stood there without saying anything.
4 .Foreign trade greatly in the past few years.
5 .It that the project will last more than ten years.
4. 用主语从句改写句子。
EXAMPLE
I’d like you to find out how new technologies can increase grape production in Binchuan county.
What I’d like you to find out is how new technologies can increase grape production in Binchuan county.
1 We wanted to know where he had lost the laptop.
Where was what we wanted to know.
2 The way in which he did the experiment was puzzling to other people.
How was puzzling to other people.
3 Do they use too many chemical pesticides? I worry about this most.
Whether is what I worry about most.
4 People are happy to see that the living conditions and income of the farmers have improved a lot.
That makes people happy.
5 We have not decided on the date for the sports meet yet.
When has not been decided on yet.
五.阅读文章并完成表格。
BETTER, GREENER LIVES AWAY FROM THE CITY
While the dream of most university graduates is to start a successful career in a big city, more and more young people are choosing to stay in their own hometowns so they can stay with their family and friends. For some young people, it is also a matter of making the quality of life for other people in their hometowns better. They also have a desire to improve and maintain the natural and economic environments in these places for generations to come.
Li Dan is a woman who has discovered that returning home to work in the field of agriculture could offer her both a meaningful challenge and a good standard of living. Born in a small village in Southwest China, she decided not to follow many of her former classmates to the city after getting her degree at university. Instead, she returned to her village and started her own fruit-growing business. Working hard over the last several years, and taking advantage of new technology and the Internet, she has expanded her business to include agritourism. Moreover, her company’s annual income has reached six million yuan and more than 50 new jobs have been created. As a result, her decision has also helped to alleviate poverty and improve the lives of many people in her village.
With China’s population expected to continue rising in the coming years, the government understands the importance of agriculture. It also understands that university graduates can help come up with better ways to grow crops, and develop new, creative ways of farming using modern technology. To help these young people with their bright and innovative ideas, the government is providing financial help. Business development loans are becoming easier for these young people to obtain, too. Government policies that aim to eliminate poverty are also having a beneficial effect.
“Life in big cities is not all it’s cracked up to be,” said Zhang Tao, from Binchuan county in Yunnan Province, adding that the air was bad, transport was terrible, and it was hard to make a decent living. What life in one’s hometown offers is a strong support network. More importantly, this network is also a good one for getting new agribusinesses up and running quite quickly. Thus, it is no surprise that more new graduates are now attracted to life in the country, where they can fulfil personal goals and contribute to their local communities rather than just being white-collar professionals in big cities.
Task:
Make a list of three advantages and three disadvantages of working in the city and working in the country. Write your notes in the table below.
Choice
Advantage
Disadvantage
Working in the city
1
2
3
1
2
3
Working in the country
1
2
3
1
2
3
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