. Scientists have to work hard to keep _____ ...

. Scientists have to work hard to keep _____ with modern discoveries and developments.

高三英语单项填空简单题查看答案及解析

You have to keep on learning if you want to keep ______ with the development of modern science and technology.

A. peace            B. touch             C. pace              D. connect

高三英语单项填空中等难度题查看答案及解析

In an effort to discourage people from using plastics，scientists have been hard at work inventing alternative packaging products．From water bottles made from seaweed to cutlery(餐具) made from rice and wheat，a number of inventions are set to change the way we eat while we are on the go，or having a relaxing picnic in the park．

The idea of using seaweed to make eco-friendly(环保的) water bottles has been around for a few years．Recently，Ari Jonsson took his invention—a water bottle made from red seaweed—to show off at a festival. The bottles will only hold their shape as long as they are filled．As soon as these bottles are empty they will begin to break down，though they would be perfectly safe to eat．Ari Jonsson’s bottles are a step closer to a widely used alternative to the current plastic ones．

The eatable water container is not the only product to add to our image of the future．Narayana Pessapaty has also created eatable spoons．After the success of his spoons, Mr Pessapaty is ready to expand and introduce forks and chopsticks to his menu．His aim is to largely reduce the amount of plastic waste，which is a huge problem for waste sites all over the world．It is a product that may take up to 500 years to break down，and recycling companies worldwide are struggling to deal with it．

Aside from the obvious benefits to the environment，this new packaging is also cheap to produce and therefore cheap to buy．Even better is the fact that similar eatable cutlery can be made at home，possibly a science project for children or just fun with friends．Why not get experimenting and create your own recipes?

1.Why do scientists invent alternative packaging products?

A. To make people’s life more convenient．

B. To reduce the amount of plastic waste．

C. To charge the way we picnic outside．

D. To show off their inventive talents．

2.What makes Ari Jonsson’s water bottles eco-friendly?

A. They can be made at home．

B. They are cheap to produce and buy．

C. They will hold their shape when they are filled．

D. They will break down themselves when empty．

3.What do Ari and Narayana’s inventions have in common?

A. They are convenient to carry．　　 B. They are safe to eat．

C. They can be used for a short time．　　 D. They are heavier than plastics．

4.What can be inferred from this passage?

A. Home-made eatable cutlery is likely to be popular．

B. Eatable cutlery’will completely replace plastics in the near future．

C. No recycling companies can breakdown plastic waste．

D. It’s unsafe for individuals to invent eatable cutlery at home．

高三英语阅读理解困难题查看答案及解析

The campaign is _____ only partially successful, so we have to keep on working hard.

A.at last　　　　　 B.at latest　　　　　 C.at least　　　　　 D.at best

高三英语单项填空中等难度题查看答案及解析

Scientists have discovered that rats have adapted to modern human life, even adapting their diets to the cities they live in.

The scientists claim that it could be possible that humans and rats have had similar changes in their genetic make-up, due to modern city life. The downside of the changes in the DNA is that they could make rats susceptible to the same health problems as humans, such as pollutants and sugary foods.

The study showed that rats’ diets have also adapted to their environment. In New York, you can see them eat bagels and beer; in Paris, they like croissants and butter. They adapt in amazing ways. The scientists also analyzed the genomes (基因组)of 29 New York rats and compared them with those of nine brown rats from Heilongjiang Province, north-east China. The finding showed that dozens of rat genes had been through major DNA changes over the centuries, as the rats spread from Asia to Europe and America, and from the countryside and into cities.

The changed genes were associated with diet, behavior, and movement, which added pressures and challenges for the rat to overcome. This could reflect the fact that urban rats have to move through highly artificial environments that are very different from natural habitats. So these gene changes might have evolved to help them move more easily through underground channels and pipes.

As the rats are closely associated with city-living humans, the scientists believe that it is possible that similar changes have happened in both species.

In October 2019, scientists used rats to successfully test an enzyme(酶) that could be used to help people quit smoking. Two groups of rats were trained to self-administer nicotine, and over two weeks their nicotine intakes increased, suggesting addiction. Then, one group of rats was given the enzyme, which led to a decreased nicotine intake. The scientists say that the enzyme could be developed for human use in the future.

1.Which of the following best explains the underlined phrase “susceptible to” in paragraph 2?

A.Not likely to be cured of. B.Being disease-resistant to.

C.Very likely to be affected by. D.Being thoroughly exposed to.

2.What does the author intend to show in the third paragraph?

A.Rats in the city are particular about their food.

B.Rats in different cities have different genetic make-up.

C.Rats are distributed in every continent of the earth.

D.Rats have been adjusting themselves to the environment.

3.What is the purpose of testing an enzyme on rats?

A.To explore rats’ survival ability. B.To help people stop smoking.

C.To learn more about city rats. D.To tell apart nicotine and enzyme.

4.What is the best title of this text?

A.Rats Have Adapted to Modern Human Life

B.Rats in the City Have Varieties of Diets

C.Rats Are More Adaptable than Humans

D.Rats Have the Same Genetic Make-up to Humans

高三英语阅读理解中等难度题查看答案及解析

Nowadays, scientists are working hard to find a best way of treating addictions __________ drugs.

高三英语单项填空简单题查看答案及解析

I just keep working hard as I have done, and ________ it will pay off. It has done so far and so I just have to do the same.

A. eagerly          B. hopefully       C. immediately       D. gradually

高三英语单项填空中等难度题查看答案及解析

Modern humans have a hard time controlling their desire to eat. Often you eat not because you are hungry, but because you are affected by many other things. How much you eat is strongly affected by how much those around you eat. People eating alone eat least. People eating with one other person eat 35 percent more than they do at home. People dining in a party of four eat 75percent more. Eating with overweight friends? You’ll eat more. Is your waitress overweight?You’ll eat more. Wide variety of food? You’ll eat more.

Plates can decide how sweet dessert tastes. If people ate it off a paper plate, they’d say, “This is good.” If they ate it off a fancy silver plate, they would say, “This is the greatest cake I’ve eaten in my entire life.”

Your knowledge about what makes food good or bad also affects how much you eat. You tend to eat more when you think the food is good, and less when you think it is bad. So Grandma’s cookies always taste better than other cookies. “Good food” even has a “health halo(光环) effect”. If we’re eating something healthy, we feel that everything in that meal is healthy. Due to this, people often believe that a cheese cake with a salad has fewer calories (卡路里) than the cheese cake alone. That’s perhaps also why eating organic (有机的) food might turn you into an annoying guy. Your brain may use anything that makes you feel good about your own morality to excuse your immoral behavior .

Food and hunger affect your judgment too. Hungry judges give more serious sentences. Kids who don’t eat breakfast behave worse than kids who eat their breakfast. People who have low blood sugar are more likely than the average person to have trouble concentrating and controlling their unpleasant emotions.

1.What is mentioned as a cause of overeating?

A. Suffering from great loneliness.

B. Being served by a helpful waitress.

C. Being treated to high quality food.

D. Eating with many friends.

2.According to the passage, an annoying person may be one who ______.

A. finds any excuse for eating more

B. is crazy about the quality of plates

C. competes with others in making cookies

D. teaches people to stick to morality

3.According to the passage, people are more likely to make a bad judgment when ______.

A. they don’t feel hungry

B. they aren’t overweight

C. they have low blood sugar

D. they know little about food

4.What would be the best title for the passage?

A. When Can’t We Go on a Diet?

B. What Affects Eating?

C. How to Make Good Food

D. Where to Find Safe Food

高三英语阅读理解中等难度题查看答案及解析

No matter how hard you work to keep your customers satisfied, you’re bound to come up against one or two who have a negative experience with your product or service. 1. However, it’s your job to address the customer’s concerns and give them a reason to come back to your brand. Below are the techniques that have worked in calming any angry customer.

2. It may seem like common sense for companies to respond as soon as possible, if not immediately, to an upset customer. The longer that customer has to wait, the angrier they’ll get and the more likely they are to write a bad review. A quick acknowledgement and show of concern will go a long way.

Just listen. Active listening is an essential skill in managing a team. It’s just as important for providing good customer service—especially when someone is upset.3. Then let them know you understand and sympathize with their disappointment.

Remain calm and ask them what they want to happen. If the No.1 rule of customer service is that the customer is always right, the second rule is to remain calm. Even in the face of angry customers, keeping a level head will have a naturally calming effect on them.

Give them the time to explain exactly what they’re upset about.4. Sometimes a little compromise might be needed on their part depending upon that solution.

Get on the phone. In today’s period of social media, customers feel very comfortable airing their frustrations from behind a keyboard.5. Most of the time if you call and explain your side—and listen to theirs— you can work things out.

A.Respond immediately.

B.It may not necessarily be your fault.

C.Give them time to express their concerns.

D.You might as well ask them questions, too.

E.Putting yourself in their shoes can solve problems quickly.

F.It is recommended that reaching out to them personally on the phone resolve the issue.

G.Ask what they feel is an appropriate solution and do your best to make that happen.

高三英语七选五中等难度题查看答案及解析

Most adults find it hard to recall events from their first few years of life and now scientists have found exactly when these childhood memories fade(消失).

A new study has found that most three-year-olds can recall a lot of what happened to them over a year earlier, and these memories persist while they are five and six, but by the time they are over seven, these memories decline(衰退) rapidly.

Most children by the age of eight or nine can only recall 35% of their experiences from under the age of three, according to the new findings.

The scientists behind the research say this is because at around this age the way we form memories begins to change. They say that before the age of seven children do not have a sense of time and place in their memories. In older children, however, the early events they can recall tend to be more adult-like in the way they are formed. Children also have a far faster rate of forgetting than adults. The findings also help to explain why children can often have clear memories of events but then forget them just a couple of years later.

The youngsters first visited the laboratory at the age of three and discussed six unique events from their past, such as family outings, trips to the zoo, and the first day of school. The children then returned for a second session between the ages of five and nine to discuss the same events. The researchers found that between the ages of five and seven, the amount of memories the children could recall remained between 63 -72 percent. However, the amount of information eight-to nine-year-old children could recall dropped to 35 and 36 percent.

1.What does the new study tell us?

A.Childhood memories decline with years.

B.Three-year-old kids are the cleverest.

C.Childhood memories can fade easily.

D.Some adults cannot recall past events.

2.What does the underlined word “persist” in Paragraph 2 mean?

A.Change. B.Remain.

C.Appear. D.Return.

3.What can we learn from Paragraph 4?

A.Adults cannot have clear memories of past events.

B.Children can think like adults when they get older.

C.Children under 7 years old have different ways of forming memories.

D.Children often forget things because they have no idea of time or place.

4.In the second session, nine-year-old children _________.

A.refused to discuss the same events

B.remembered all their family outings

C.could recall 72 percent of their past events

D.only remembered a small part of their past events

高三英语阅读理解中等难度题查看答案及解析