Louis Pasteur, the famous French chemist and bacteriologist(微生物学家), invented “pasteurization”. In 1854 Pasteur was made head of the department of science at the University of Lille, and it was there that he made one of his most famous discoveries. Lille was a major center for wine and beer-making, and some of the local wine-makers asked Pasteur if he could help solve the problem of keeping wine fresh. At that time, it was believed that food and drinks go “bad” due to a purely chemical process. But during a series of experiments Pasteur proved that tiny living organisms(微生物)caused food and drinks to go bad. In the case of wine and beer the organisms are already present in the form of the various yeasts (酵母) that caused the fermentation(发酵) process. Pasteur discovered that heating the wine gently for a few minutes after it had fermented would kill off the yeast that was left in the wine, with the result that the wine would remain fresh for much longer. He also proved that food and drinks could be turned bad by other organisms that were present in the air, and that they too would keep fresh much longer if they were kept in airtight containers.
The heating process was so successful that it made Pasteur famous. It was named “pasteurization” in his honour, and by about 1900 it had been widely used for processing and bottling cows’ milk. The result was a huge drop in the number of bottle-fed babies dying from infant diarrhea(婴儿腹泻)and from that time on it has been a standard treatment for milk and many other food products. This simple process has saved thousands, possibly millions, of lives worldwide. Pasteur became ___________ in 1854.
| A．the chairperson of the science department at the University of Lille |
| B．the director of a chemical laboratory at the University of Lille |
| C．the general manager of a large beer-making company |
| D．the president of the University of Lille |
According to the passage, Lille was a major center for ___________ in the mid-19th century.
| A．growing grain crops | B．making beer and wine |
| C．doing chemical research | D．producing various kinds of yeasts |
In the last sentence of Paragraph 1, the underlined word “they” refers to ___________.
| A．wine and beer | B．food and drinks | C．the various yeasts | D．other organisms |
We can infer from the passage that Pasteur’s discovery __________.
| A．is no longer widely used for treating milk and other food products |
| B．did not bring much profit to the wine makers in Lille |
| C．has done a lot of good to children in the world |
| D．has greatly reduced the number of wars in the world |
According to the passage, we know it is that causes food and drinks to go bad.
| A．a purely chemical process. | B．tiny living organisms(微生物) |
| C．keeping them in airtight containers. | D．the heating process |
【2015·四川】D
Their cheery song brightens many a winter's day. But robins are in danger of wearing themselves out by singing too much. Robins are singing all night一as well as during the day, British-based researchers say.
David Dominoni, of Glasgow University, said that light from street lamps, takeaway signs and homes is affecting the birds' biological clocks, leading to them being wide awake when they should be asleep.
Dr Dominoni, who is putting cameras inside nesting boxes to track sleeping patterns, said lack of sleep could put the birds’ health at risk. His study shows that when robins are exposed to light at night in the lab, it leads to some genes being active at the wrong time of day. And the more birds are exposed to light, the more active they are at night.
He told people at a conference, "There have been a couple of studies suggesting they are increasing their song output at night and during the day they are still singing. Singing is a costly behaviour and it takes energy. So by increasing their song output, there might be some costs of energy."
And it is not just robins that are being kept awake by artificial light. Blackbirds and seagulls are also being more nocturnal. Dr Dominoni said, "In Glasgow where I live, gulls are a serious problem. I have people coming to me saying `You are the bird expert. Can you help us kill these gulls?'.During the breeding(繁殖)season, between April and June, they are very active at night and very noisy and people can't sleep."
Although Dr Dominoni has only studied light pollution, other research concluded that robins living in noisy cities have started to sing at night to make themselves heard over loud noise.
However, some birds thrive(兴旺)in noisy environments. A study from California Polytechnic University found more hummingbirds in areas with heavy industrial machinery. It is thought that they are capitalising on their predators(天敌)fleeing to quieter areas.According to Dr Dominoni's study, what cause robins to sing so much?
| A．The breeding season. |
| B．The light in modern life |
| C．The dangerous environment. |
| D．The noise from heavy machinery. |
What is the researchers' concern over the increase of birds' song output?
| A．The environment might be polluted. |
| B．The birds' health might be damaged. |
| C．The industry cost might be increased. |
| D．The people's hearing might be affected. |
What does the underlined word "nocturnal" in Paragraph 5 mean?
| A．Active at night. | B．Inactive at night. |
| C．Active during the day. | D．Inactive during the day. |
Why do some birds thrive in noisy environments?
| A．Because there are fewer dangers. |
| B．Because there is more food to eat. |
| C．Because there is less light pollution |
| D．Because there are more places to take shelter. |
【2015·陕西】C
The production of coffee beans is a huge, profitable business, but, unfortunately, full-sun production is taking over the industry and bringing about a lot of damage. The change in how coffee is grown from shade-grown production to full-sun production endangers the very existence of, certain animals and birds, and even disturbs the world’s ecological balance.
On a local level, the damage of the forest required by full-sun fields affects the area’s birds and animals. The shade of the forest trees provides a home for birds and other special(物种) that depend on the trees’ flowers and fruits. Full-sun coffee growers destroy this forest home. As a result, many special are quickly dying out.
On a more global level, the destruction of the rainforest for full-sun coffee fields also threatens(威胁)human life. Medical research often makes use of the forests' plant and animal life, and the destruction of such species could prevent researchers from finding cures for certain diseases. In addition, new coffee-growing techniques are poisoning the water locally, and eventually the world's groundwater.
Both locally and globally, the continued spread of full-sun coffee plantations (种植园)could mean the destruction of the rainforest ecology. The loss of shade trees is already causing a slight change in the world's climate, and studies show that loss of oxygen-giving trees also leads to air pollution and global warming. Moreover, the new growing techniques are contributing to acidic(酸性的) soil conditions.
It is obvious that the way much coffee is grown affects many aspects many aspects of life, from the local environment to the global ecology. But consumers do have a choice. They can purchase shade-grown coffee whenever possible, although at a higher cost. The future health of the planet and mankind is surely worth more than an inexpensive cup of coffee.What can we learn about full-sun coffee production from Paragraph 4?
| A．It limits the spread of new growing techniques. |
| B．It leads to air pollution and global warming. |
| C．It slows down the loss of shade trees. |
| D．It improves local soil conditions. |
The purpose of the text is to .
| A．entertain | B．advertise | C．instruct | D．persuade |
Where does this text probably come from ?
| A．An agricultural magazine. |
| B．A medical journal. |
| C．An engineering textbook. |
| D．A tourist guide. |
Which of the following shows the structure of the whole text?
【2015·广东】C
Daniel Anderson, a famous psychologist, believes it’s important to distinguish television’s influences on children from those of the family. We tend to blame TV, he says, for problems it doesn’t really cause, overlooking our own roles in shaping children’s minds.
One traditional belief about television is that it reduces a child’s ability to think and to understand the world. While watching TV, children do not merely absorb words and images (影像). Instead, they learn both explicit and hidden meanings from what they see. Actually, children learn early the psychology of characters in TV shows. Furthermore, as many teachers agree, children understand far more when parents watch TV with them, explaining new words and ideas. Yet, most parents use an educational program as a chance to park their kids in front of the set and do something in another room.
Another argument against television is that it replaces reading as a form of entertainment. But according to Anderson, the amount of time spent watching television is not related to reading ability. TV doesn’t take the place of reading for most children; it takes the place of similar sorts of recreation, such as listening to the radio and playing sports. Things like parents’ educational background have a stronger influence on a child’s reading. “A child’s reading ability is best predicted by how much a parent reads.” Anderson says.
Traditional wisdom also has it that heavy television-watching lowers IQ (智商) scores and affects school performance. But here, too, Anderson notes that no studies have proved it. In fact, research suggests that it’s the other way around. “If you’re smart young, you’ll watch less TV when you’re older,” Anderson says. Yet, people of lower IQ tend to be lifelong television viewers.
For years researchers have attempted to show that television is dangerous to children. However, by showing that television promotes none of the dangerous effects as conventionally believed, Anderson suggests that television cannot be condemned without considering other influences.By watching TV, children learn _________.
| A．images through words |
| B．more than explicit meanings |
| C．more about images than words |
| D．little about people’s psychology |
An educational program is best watched by a child _________.
| A．on his own |
| B．with other kids |
| C．with his parents |
| D．with his teachers |
Which of the following is most related to children’s reading ability?
| A．Radio-listening |
| B．Television-watching |
| C．Parents’ reading list |
| D．Parents’ educational background |
Anderson believed that _________.
| A．the more a child watches TV, the smarter he is |
| B．the younger a child is, the more he watches TV |
| C．the smarter a child is, the less likely he gets addicted to TV |
| D．the less a child watches TV, the better he performs at school |
What is the main purpose of the passage?
| A．To advise on the educational use of TV. |
| B．To describe TV’s harmful effects on children. |
| C．To explain traditional views on TV influences. |
| D．To present Anderson’s unconventional ideas. |
C
Suppose you become a leader in an organization. It’s very likely that you’ll want to have volunteers to help with the organization’s activities. To do so, it should help to understand why people undertake volunteer work and what keeps their interest in the work.
Let’s begin with the question of why people volunteer. Researchers have identified several factors that motivate people to get involved. For example, people volunteer to express personal values related to unselfishness, to expand their range of experiences, and to strengthen social relationships. If volunteer positions do not meet these needs, people may not wish to participate. To select volunteers, you may need to understand the motivations of the people you wish to attract.
People also volunteer because they are required to do so. To increase levels of community service, some schools have launched compulsory volunteer programs. Unfortunately, these programs can shift people’s wish of participation from an internal factor (e.g., “I volunteer because it’s important to me”) to an external factor (e.g., “I volunteer because I’m required to do so”). When that happens, people become less likely to volunteer in the future. People must be sensitive to this possibility when they make volunteer activities a must.
Once people begin to volunteer, what leads them to remain in their positions over time? To answer this question, researchers have conducted follow-up studies in which they track volunteers over time. For instance, one study followed 238 volunteers in Florida over a year. One of the most important factors that influenced their satisfaction as volunteers was the amount of suffering they experienced in their volunteer positions. Although this result may not surprise you, it leads to important practical advice. The researchers note that attention should be given to “training methods that would prepare volunteers for troublesome situations or provide them with strategies for coping with the problem they do experience”.
Another study of 302 volunteers at hospitals in Chicago focused on individual differences in the degree to which people view “volunteer” as an important social role. It was assumed that those people for whom the role of volunteer was most part of their personal identity would also be most likely to continue volunteer work. Participants indicated the degree to which the social role mattered by responding to statements such as “Volunteering in Hospital is an important part of who I am.” Consistent with the researchers’ expectations, they found a positive correlation (正相关) between the strength of role identity and the length of time people continued to volunteer. These results, once again, lead to concrete advice: “Once an individual begins volunteering, continued efforts might focus on developing a volunteer role identity.... Items like T-shirts that allow volunteers to be recognized publicly for their contributions can help strengthen role identity”.People volunteer mainly out of ______ .
| A．academic requirements | B．social expectations |
| C．financial rewards | D．internal needs |
What can we learn from the Florida study?
| A．Follow-up studies should last for one year. |
| B．Volunteers should get mentally prepared. |
| C．Strategy training is a must in research. |
| D．Volunteers are provided with concrete advice. |
What is most likely to motivate volunteers to continue their work?
| A．Individual differences in role identity. |
| B．Publicly identifiable volunteer T-shirts. |
| C．Role identity as a volunteer. |
| D．Practical advice from researchers. |
What is the best title of the passage?
| A．How to Get People to Volunteer |
| B．How to Study Volunteer Behaviors |
| C．How to Keep Volunteers’ Interest |
| D．How to Organize Volunteer Activities |
【2015·江苏】B
In the United States alone, over 100 million cell-phones are thrown away each year. Cell-phones are part of a growing mountain of electronic waste like computers and personal digital assistants. The electronic waste stream is increasing three times faster than traditional garbage as a whole.
Electronic devices contain valuable metals such as gold and silver. A Swiss study reported that while the weight of electronic goods represented by precious metals was relatively small in comparison to total waste, the concentration (含量) of gold and other precious metals was higher in So-called e-waste than in naturally occurring minerals.
Electronic wastes also contain many poisonous metals. Even when the machines are recycled and the harmful metals removed, the recycling process often is carried out in poor countries, in practically uncontrolled ways which allow many poisonous substances to escape into the environment.
Creating products out of raw materials creates much more waste material, up to 100 times more, than the material contained in the finished products. Consider again the cell-phone, and imagine the mines that produced those metals, the factories needed to make the box and packaging(包装) it came in. Many wastes produced in the producing process are harmful as well.
The U.S. Environmental Protection Agency notes that most waste is dangerous in that “the production, distribution, and use of products — as well as management of the resulting waste — all result in greenhouse gas release.” Individuals can reduce their contribution by creating less waste at the start — for instance, buying reusable products and recycling.
In many countries the concept of extended producer responsibility is being considered or has been put in place as an incentive (动机) for reducing waste. If producers are required to take back packaging they use to sell their products, would they reduce the packaging in the first place?
Governments’ incentive to require producers to take responsibility for the packaging they produce is usually based on money. Why, they ask, should cities or towns be responsible for paying to deal with the bubble wrap (气泡垫) that encased your television?
From the governments’ point of view, a primary goal of laws requiring extended producer responsibility is to transfer both the costs and the physical responsibility of waste management from the government and tax-payers back to the producers.
By mentioning the Swiss study, the author intends to tell us that _________ .
| A．the weight of e-goods is rather small |
| B．E-waste deserves to be made good use of |
| C．natural minerals contain more precious metals |
| D．the percentage of precious metals is heavy in e-waste |
The responsibility of e-waste treatment should be extended _________ .
| A．from producers to governments |
| B．from governments to producers |
| C．from individuals to distributors |
| D．from distributors to governments |
What does the passage mainly talk about?
| A．The increase in e-waste. |
| B．The creation of e-waste. |
| C．The seriousness of e-waste. |
| D．The management of e-waste. |
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