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阅读下面材料，在空白处填入1个适当单词的或括号内单词的正确形式。

Scientists found that air pollution may be responsible 1. a big reduction in 2. (intelligent). Research showed that air pollution led to big falls in test 3. (score) for languages and mathematics. The study called "The influence of air pollution on cognitive (认知的)performance"4.(conduct) over four years ago. Researchers analyzed speaking and mathematics tests 5. (take) by 20,000 people of all ages. They said, "Polluted air may do harm to cognitive ability as people become older. "

The study is a warning to the rest of the world ,6.(particular) those in cities. Over 91 percent of the world population live in areas with polluted air,7. is the fourth biggest cause of global deaths. Researchers discovered that the 8.(long) people were exposed to polluted air, the greater their cognitive ability went down. They said air pollution caused a year' s worth of lost education. For those aged over 60, this could be several years. A researcher warned, "There 9.be) no shortcut to solve this issue. Governments really need to take effective measures 10.(reduce) air pollution. "

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阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Scientists found that air pollution may be responsible 1. a significant reduction in intelligence. The research conducted by the World Health Organization ( WHO ) in China 2. (show) that air pollution led to big falls in test 3. (score) for languages and arithmetic. The study is called “The impact of exposure to air pollution on cognitive (认知的）performance ”. It was published in the Proceedings of the National Academy of Sciences journal. The study took place over four years. Researchers analyzed speaking and arithmetic tests taken by 20 000 people of all ages. They said， “Polluted air may prevent cognitive ability 4. people become older.”

The study is a warning to the rest of the world, 5. (especial) to those in cities. Over 91 percent of the world population live in areas with 6. (poison) air and air pollution is the 7. (four) highest cause of global deaths. Researchers discovered that 8. longer people were exposed to polluted air，the greater their intelligence went down. They said air pollution caused a year’s worth of lost education. For those 9. were over 60 years old，this could be several years. A researcher warned，“There is no shortcut 10. (solve) this issue. Governments really need to take effective measures to reduce air pollution.”

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Scientists have found a reliable way to lengthen life in lab animals:Reduce the amount of calories(卡路里)they eat.

This method,1.(know)as caloric restriction, has been shown to lengthen life of organisms ( 有 机体 )and reduce some age-related2.(disease).Whether it can do the same in people has been an open question. 3.　 ,a new study suggests that in adults, long-term restriction of calorie intake can have an effect on their health.

The researchers looked at a group of 143 healthy adults who ranged in age4.21 to 50. They were instructed5.(practice)caloric restriction for two years.They could eat the foods they wanted so long as they cut back on the foods they ate,with the aim of6.(cut)the calories they consumed by 25 percent.

Many did not achieve that goal.On average,the dieters managed to cut down about 12 percent of their total calories, or7.(rough)300 calories a day. But the group saw many of their health markers improve. They8.(lose)body fat, their blood pressure fell slightly, and they had better blood sugar control. Meanwhile, another 75 healthy adults 9.　 did not practice caloric restriction saw no 10.　 (improve)in these markers.

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阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Scientists have discovered that__1. _(stay) in the cold could help us lose weight. Researchers at the University of California found that exposure to the cold increases levels of a protein that helps form brown fat-the type of fat that produces heat and keeps us warm. Brown fat burns energy, ___2.__ helps us lose weight. White fat stores extra energy, which results 3.　　 weight gain. The researchers said that because air conditioning and heating give us constant, __4. _(comfort) temperatures, our body's need for brown fat has decreased. They found that:“Outdoor workers in northern Finland who___ 5. __(expose) to cold temperature have__ 6._ significant amount of brown fat when___7. __(compare) to same - aged indoor workers.”

The research was conducted on two different control groups of mice.__ 8. __group was injected with the protein that helps create brown fat. This group later gained 30% less weight after both groups were fed high - fat diets. The researchers say this could be good news in the fight against obesity. People who are obese have ___9.__(low) levels of brown fat than thinner people. Head researcher Hei Sook Sul said: "This protein could become an important target for research into the treatment and prevention of obesity and obesity - related diseases.” She added: "If you can somehow increase levels of this protein, you could__10.__(possible) lose more weight even if eating the same amount of food.”

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阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

Scientists have discovered that1._________(stay) in the cold could help us lose weight. Researchers at the University of California found that exposure to the cold increases levels of a protein that helps form brown fat — the type of fat that produces heat and keeps us warm. Brown fat burns energy, 2._________ helps us lose weight. White fat stores extra energy, which results 3.____ weight gain. The researchers said that because air conditioning and heating give us constant, 4.__________ (comfort) temperatures, our body's need for brown fat has decreased. They found that: "Outdoor workers in northern Finland who 5._______(expose) to cold temperature have 6._____significant amount of brown fat when 7.________(compare) to same-aged indoor workers."

The research was conducted on two different control groups of mice. 8.__________ group was injected with the protein that helps create brown fat. This group later gained 30% less weight after both groups were fed high-fat diets. The researchers say this could be good news in the fight against obesity. People who are obese have 9.　　　　 (low) levels of brown fat than thinner people. Head researcher Hei Sook Sul said: "This protein could become an important target for research into the treatment and prevention of obesity and obesity-related diseases." She added: "If you can somehow increase levels of this protein, you could 10._________(possible) lose more weight even if eating the same amount of food."

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I found a website about some qualities that are likely to lead to success while __1.____(surf) the Internet. I think the following qualities are essential if you want to succeed. One is never to give up; this is also called perseverance, which I think is of great importance. You must have faith __2.__ yourself and try your best to realize your dreams. You need to be focused rather than being __3.___(aim). Another quality that __4.___(help) you succeed is the ability to do and think about things in new and different ways. Most _5.____(success) people are not as conventional as the people around them. __6.___ others see failure, they see possibility. Where others see a closed door, they see __7.__ open window. To get success, you may find it important _8.___(see) how they have achieved success. You will be inspired by learning from them. Practising is just as important if you want to succeed, because practice makes perfect. Finally, ___9.__(honest) is fundamental as you climb the ladder of success. People who are dishonest _10._(rare) succeed.

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Scientists are beginning to understand that sitting down for long hours can be very bad for your health. One of the reasons for this is that poor posture (姿势) leads 1.health problems. Here are some suggestions to help improve your posture and your health.

Sitting with poor posture can bring about serious back pain that doesn't go away. Many people believe that they should sit with their backs straight at a 90 degree angle to the floor, 2.scientists have recently discovered that this actually causes more stress on the body. They find that sitting with the back slightly reclined (斜倚) at a 135 degree angle is the 3.(healthy) posture, where the back muscles are relaxed and the spine (脊柱) is at 4.natural resting position.

Many people bend their necks forward to look at a screen or read a book while sitting, 5.develops constant neck pain. The lower neck muscles need to work very hard to support the 6.(weigh) of the head. The bones in the spine can slide forward, 7. (cause) a great deal of neck pain.8. (avoid) this problem, you should try to look at the top part of a computer screen when working at a desk. Your elbows should be at the side and your feet should be flat on the floor.

You should also try to 9.(regular) stop work and do some exercises. Put your hands behind your back and bring your chest forward slowly. Take a deep breath and relax. Finally, you can try to buy a special kind of chair that 10.(make)to improve sitting posture.

高三英语语法填空中等难度题查看答案及解析

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Scientists from the University of Illinois, US, divided several students 1.four groups. The students2.(ask) to do certain tasks involving3.(create) thinking, to different volumes of back-ground noise.

They found that the students did best when 4.(work) under moderate noise-70 decibels(分贝), 5.is about the same level as6.(find) in a cafe. Students did worse in low noise-50 decibels, the volume of a quiet room-and did the7.(poor) when in a high-noise environment-85 decibels, the noise level of a factory.

8.a high level of noise distracts people, moderate noise can9.(actual) increase creativity. “It helps you think outside the box, ”Raci Mehta, a lead researcher in the study, told The New York Times.

However, working in a very quiet place can10.(strong) our focus, and it is good for doing detailed things like proofreading(校对) a paper.

高三英语语法填空中等难度题查看答案及解析

语法填空。

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Among the few scientists who have had a great effect on science and history, Albert Einstein is perhaps the 1.(great). An American university president once commented that Einstein had created2. new view of the universe. His theory has completely changed the way scientists understand time and space. Now, more and more people agree that the universe is something more complicated than 3. they have ever thought before.

Einstein 4. (bear) in Germany in 1879. In 1914, young Einstein, already internationally famous, became a professor at an institute in Berlin. He had few duties, little teaching and unlimited opportunities for study. However, 5. peaceful life was soon broken by the First World War.

Einstein hated violence. He was deeply affected by the war; he sat 6. (happy) in his office doing nothing and 7. (lose) interest in his research. Only when peace came in 1918 was he able to get back to work.

In the years 8. (follow) the First World War, people showered honor upon him. He became the head of the Kaiser Wilhelm Institute of Theoretical Physics. In 1921 he won the Nobel Prize 9. Physics and was greatly honored and respected in Germany. However, his life was again disrupted. The Second World War broke out and Einstein had to moved to the US, 10. he lived until his death in 1955.

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The History of Air Conditioners

The first practical cooling system for use in industry　　 1.　　 (invent) in 1902 by Willis Carrier in New York, the USA. He continued to improve　 2.　　 （he) invention and, in 1928, developed the first air conditioner for home use. In 1939, an American car company introduced the first air conditioner for cars,　　 3.　　 (make) driving more comfortable.

After World War II many American　 4.　 　 (company) began making air conditioners and, beginning in 1950, many homes in the USA were equipped 5.　 　 central air conditioning. Central air conditioning uses a single unit6.　　 （heat) or cool a whole house. With this, people could escape the heat of summer and the cold of winter no matter 　　 7. they were in the house.

In the 1970s, electricity 8.　　 （become) more expensive, so people developed　　 9.(good) air conditioners to save money. Later, the cooling gas in air conditioners was found to pollute the environment, so engineers have been working to produce air conditioners more friendly to the environment　 10.　　 the 1980s.

高三英语语法填空中等难度题查看答案及解析