When it comes to second hand cars, one has to...

When it comes to second hand cars, one has to be as ________as possible about the source and the condition of them.

A．cautious B．patient  C．urgent   D．casual

高三英语单项填空简单题查看答案及解析

Transport has a lot to answer for when it comes to harming the planet. While cars and trains are moving towards greener, electric power, emissions from air travel are expected to increase massively by 2050. If we want big green sky solutions, we need blue sky thinking. Fortunately, there's plenty of that happening right now, particularly the short-haul flights powered by batteries.

Harbour Air is the largest seaplane airline in North America, flying 30, 000 commercial flights in 40 seaplanes each year. Significantly, all Harbour Air routes last less than 30 minutes, making it perfectly fit for electric engines. “As an airline, were currently in the process of turning all our planes into electric airplanes. ” says CEO Greg McDougall. To make this happen, the airline has partnered up with MagniX to create the world's first commercial flight with an electric engine.

Making the skies electric isn't just good for the environment, it also makes sound financial sense: a small aircraft uses $400 on conventional fuel for a 100-mile flight, while an electric one costs $8-12 for the same distance, and that's before you factor in the higher maintenance costs of a traditional engine. There's also the added bonus that electric planes are just much more pleasant to fly in. No loud engine noise, no smell of fuel, just environmentally friendly peace and quiet.

While there has been real progress in the e-plane industry, the technical challenges that remain are keeping everyone's feet firmly on the ground. A battery, even a lithium one, only provides 250 watt-hours per kilogram; compare this to liquid fuel, which has a specific energy of 11, 890 watt-hours per kilogram. Carrying adequate batteries, however, would make the plane too heavy to get off the ground. In aircraft, where every bit of weight counts, this can't just be ignored.

The transition (过渡) from gas to electric in the automobile industry has been made easier by hybrids-vehicles powered by both fuel and electricity. Many believe the same patter could be followed in the air. Fuel consumption could be reduced as the electric component is switched on at key parts of the journey, especially on take-off and landing.

It's certainly an exciting time for electric flying. With companies like Harbour Air taking the lead, battery-powered planes, especially on short-haul journeys, are set to become a reality in the next few years.

1.According to Para. 1, what is happening in air transport?

A.New explorations of the sky are being launched.

B.Pollution caused by batteries is being controlled.

C.Efforts are being made to make air travel greener.

D.Demand for short-haul flights is increasing massively.

2.Why is Harbour Air fit for electric flights?

A.It runs short routes.

B.It has a strong partner.

C.Its planes can land on the sea.

D.It has planes with powerful engines.

3.The expression "added bonus" refers to the fact that electric planes_________.

A.give passengers more pleasant views

B.bring airlines more financial benefits

C.offer more enjoyable flying experiences

D.cost less in maintenance than traditional ones

4.What might be the biggest challenge of electric flying?

A.To improve the ground service for e-planes.

B.To find qualified technicians for e-plane industry.

C.To calculate the energy needed to power e-planes.

D.To balance power and weight of batteries in e-planes.

5.What could be done during the transition from gas to electric in air flight?

A.To produce new electric components.

B.To increase battery consumption.

C.To use mixed-power technology.

D.To expand the landing field.

6.What is the author's attitude towards the prospect of electric flying?

A.Short-sighted. B.Wait-and-see.

C.Optimistic. D.Skeptical.

高三英语阅读理解困难题查看答案及解析

—Mike is planning to buy a car.

—I know. By next month, he ________ enough for a second-hand one.

A.saves B.saved C.will have saved D.has saved

高三英语单项填空简单题查看答案及解析

The behaviour of a building’s users may be at least as important as its design when it comes to energy use, according to new research from the UK Energy Research Centre (UKERC). The UK promises to reduce its carbon emissions (排放）by 80 percent by 2050, part of which will be achieved by all new homes being zero-carbon by 2016. But this report shows that sustainable building design on its own — though extremely important- is not enough to achieve such reductions: the behaviour of the people using the building has to change too.

The study suggests that the ways that people use and live in their homes have been largely ignored by existing efforts to improve energy efficiency (效率)，which instead focus on architectural and technological developments.

‘Technology is going to assist but it is not going to do everything,’explains Katy Janda, a UKERC senior researcher，‘consumption patterns of building users can defeat the most careful design. ’In other words，old habits die hard, even in the best-designed eco-home.

Another part of the problem is information. Households and bill-payers don’t have the knowledge they need to change their energy-use habits. Without specific information，it’s hard to estimate the costs and benefits of making different choices. Feedback (反馈） facilities, like smart meters and energy monitors，could help bridge this information gap by helping people see how changing their behaviour directly affects their energy use; some studies have shown that households can achieve up to 15 percent energy savings using smart meters.

Social science research has added a further dimension (方面），suggesting that individuals’behaviour in the home can be personal and cannot be predicted 一 whether people throw open their windows rather than turn down the thermostat (恒温器) , for example. Janda argues that education is the key. She calls for a focused programme to teach people about buildings and their own behaviour in them.

1.As to energy use, the new research from UKERC stresses the importance of________.

A. zero-carbon homes

B. the behaviour of building users

C. sustainable building design

D. the reduction of carbon emissions

2.The underlined word “which” in Paragraph 2 refers to”________.”

A.the ways　　 B.their homes　 C.developments 　　 D.existing efforts

3.What are Katy Janda’s words mainly about?

A. The importance of changing building users, habits.

B. The necessity of making a careful building design.

C. The variety of consumption patterns of building users.

D. The role of technology in improving energy efficiency.

4.The information gap in energy use _______.

A. can be bridged by feedback facilities

B. affects the study on energy monitors

C. brings about problems for smart meters

D. will be caused by building users’ old habits

5.What does the dimension added by social science research suggest?

A. The social science research is to be furthered.

B. The education programme is under discussion.

C. The behaviour of building users is unpredictable.

D. The behaviour preference of building users is similar.

高三英语阅读理解中等难度题查看答案及解析

The behaviour of a building’s users may be at least as important as its design when it comes to energy use, according to new research from the UK Energy Research Centre (UKERC). The UK promises to reduce its carbon emissions (排放）by 80 percent by 2050, part of which will be achieved by all new homes being zero-carbon by 2016. But this report shows that sustainable building design on its own — though extremely important- is not enough to achieve such reductions: the behaviour of the people using the building has to change too.

The study suggests that the ways that people use and live in their homes have been largely ignored by existing efforts to improve energy efficiency (效率)，which instead focus on architectural and technological developments.

‘Technology is going to assist but it is not going to do everything,’explains Katy Janda, a UKERC senior researcher，‘consumption patterns of building users can defeat the most careful design. ’In other words，old habits die hard, even in the best-designed eco-home.

Another part of the problem is information. Households and bill-payers don’t have the knowledge they need to change their energy-use habits. Without specific information，it’s hard to estimate the costs and benefits of making different choices. Feedback (反馈） facilities, like smart meters and energy monitors，could help bridge this information gap by helping people see how changing their behaviour directly affects their energy use; some studies have shown that households can achieve up to 15 percent energy savings using smart meters.

Social science research has added a further dimension (方面），suggesting that individuals’behaviour in the home can be personal and cannot be predicted 一 whether people throw open their windows rather than turn down the thermostat (恒温器) , for example.

Janda argues that education is the key. She calls for a focused programme to teach people about buildings and their own behaviour in them.

1.As to energy use, the new research from UKERC stresses the importance of________.

A.    zero-carbon homes    　　　　 B. the behaviour of building users

C.    sustainable building design    D. the reduction of carbon emissions

2.The underlined word “which” in Paragraph 2 refers to”________.”

A. the ways                B. their homes

C.    developments    　　　　 D. existing efforts

3.What are Katy Janda’s words mainly about?

A.    The importance of changing building users, habits.

B.    The necessity of making a careful building design.

C.    The variety of consumption patterns of building users.

D.    The role of technology in improving energy efficiency.

4.The information gap in energy use _______.

A.    can be bridged by feedback facilities

B.    affects the study on energy monitors

C.　 brings about problems for smart meters

D.    will be caused by building users’ old habits

5.What does the dimension added by social science research suggest?

A.    The social science research is to be furthered.

B.    The education programme is under discussion.

C.    The behaviour of building users is unpredictable.

D.    The behaviour preference of building users is similar.

高三英语阅读理解中等难度题查看答案及解析

The behaviour of a building’s users may be at least as important as its design when it comes to energy use, according to new research from the UK Energy Research Centre (UKERC). The UK promises to reduce its carbon emissions (排放）by 80 percent by 2050, part of which will be achieved by all new homes being zero-carbon by 2016. But this report shows that sustainable building design on its own — though extremely important — is not enough to achieve such reductions: the behaviour of the people using the building has to change too.

The study suggests that the ways that people use and live in their homes have been largely ignored by existing efforts to improve energy efficiency，which instead focus on architectural and technological developments.

‘Technology is going to assist but it is not going to do everything,’ explains Katy Janda, a UKERC senior researcher, ‘consumption patterns of building users can defeat the most careful design.’ In other words, old habits die hard, even in the best-designed eco-home.

Another part of the problem is information. Households and bill-payers don’t have the knowledge they need to change their energy-use habits. Without specific information, it’s hard to estimate the costs and benefits of making different choices. Feedback (反馈） facilities, like smart meters and energy monitors，could help bridge this information gap by helping people see how changing their behaviour directly affects their energy use; some studies have shown that households can achieve up to 15 percent energy savings using smart meters.

Social science research has added a further dimension (方面），suggesting that individuals’ behaviour in the home can be personal and cannot be predicted —whether people throw open their windows rather than turn down the thermostat (恒温器) , for example.

Janda argues that education is the key. She calls for a focused programme to teach people about buildings and their own behaviour in them.

1.As to energy use, the new research from UKERC stresses the importance of________.

A. zero-carbon homes

B. the behaviour of building users

C. sustainable building design

D. the reduction of carbon emissions

2.The underlined word “which” in Paragraph 2 refers to “________.”

A. the ways　　 　　 B. their homes

C. developments　　 D. existing efforts

3.What are Katy Janda’s words mainly about?

A. The importance of changing building users’ habits.

B. The necessity of making a careful building design.

C. The variety of consumption patterns of building users.

D. The role of technology in improving energy efficiency.

4.The information gap in energy use _______.

A. can be bridged by feedback facilities

B. affects the study on energy monitors

C. brings about problems for smart meters

D. will be caused by building users’ old habits

5.What does the dimension added by social science research suggest?

A. The social science research is to be furthered.

B. The education programme is under discussion.

C. The behaviour of building users is unpredictable.

D. The behaviour preference of building users is similar.

高三英语阅读理解中等难度题查看答案及解析

Getting active in midlife could be as good for you as starting young when it comes to reducing the risk of an early death, researchers have suggested. But experts say the study also shows that the benefits fade once exercise declines.

“If you maintain an active lifestyle or participate in some sort of exercise from youth to middle age, you can reduce your risk for dying,” said Dr. Pedro Saint-Maurice, the lead author of the research. “If you are not active and you get to your 40s - 50s and you decide to become active, you can still enjoy a lot of those benefits.”

The study was based on data from more than 300,000 Americans aged 50 - 71 who undertook a questionnaire(问卷) in the late-1990s. They were asked to recall the extent of their moderate to vigorous leisure exercise at different stages of their life. Researchers then used national records to track who died in the years up to the end of 2016. After taking into account factors including age, sex, smoking and diet, the team found that those who were exercising into middle age had a lower risk of death than those who had never carried out any leisure exercise. However, when the team looked at different patterns in the way people were active over their life, it found a surprise.

Men and women who started exercising at the age of 40 - 50 reduced their risk of death from any cause by about 35%. The benefit was similar to that seen for people who reached and maintained similar activity from their teens or 20s onwards.

However, the study found that the protective effect of exercise did not last forever. People whose levels of leisure exercise decreased by middle age had no difference in the risk of an early death to those who had always been couch potatoes. “If you have been active and you slowly decrease your exercise participation as you age, you lose a lot of the benefits that we know are associated with exercise,” Saint - Maurice said.

But the study has limitations, including that it is based on individuals recalling how active they were many years before. What’s more, the research looked only at death records, not other aspects of health such as levels of sickness and disease. Nonetheless, he said, the message was positive. “This adds to the growing body of evidence about the importance of physical activity and exercise across he life course, and indicates that it is never too late to start.”

1.Which of the following is TRUE about the study?

A.The study took about two decades to complete.

B.The study involved around 30,000 elderly Americans.

C.Questionnaires and interviews were the sources of data.

D.The participants in the study took regular physical exercise.

2.According to the passage, what does “a surprise” (Para.3) refer to?

A.The earlier you exercise, the greater your health benefits will be.

B.Participating in exercise from youth to middle age benefits one’s health greatly.

C.The benefit of getting active in midlife is similar to that of starting young.

D.The benefits of exercising in midlife will decline once you stop exercising.

3.It can be inferred from the passage that _________.

A.an active lifestyle will not necessarily bring positive health benefits.

B.participants’ memories may affect the reliability of the study result

C.people exercising from their teens can maintain health forever

D.women benefit more from vigorous exercise than men do

4.Which of the following might be the best title of the passage?

A.Exercise has its limitations, studies show

B.Getting active when young, experts suggest

C.Health benefits fade with age, doctors warn

D.Never too old to start, researchers say

高三英语阅读理解困难题查看答案及解析

When it comes to __ in public, no one can match him.

A.　 speak　　　　 　　　　　 B.　 speaking

C. being spoken　　　　 　 D. be spoken

高三英语单项填空中等难度题查看答案及解析

When it comes to __ in public, no one can match him.

A.　 speak　　　　　 B.　 speaking　　　 C. being spoken　　　　　 D. be spoken

高三英语单项填空中等难度题查看答案及解析

Many people think of guys as being carefree when it comes to their appearance. But in fact, a lot of guys spend plenty of time in front of the mirror. They care just as much as girls do about their body image.

Body image is a person’s opinions and feelings about his or her own body and　 physical appearance._ 1.__You appreciate your body for its capabilities(能力) and accept its imperfections.

_2.__Here are some ideas：

Recognize your strengths.Different body types are good for different things. What does your body do well? Maybe your speed, strength, or coordination (协调性) makes you better than others at a certain sport. That may be basketball, table tennis, mountain biking, dancing, or even running. Or perhaps you have non­sports skills, like drawing, painting, singing, playing a musical instrument, writing, or acting._ 3.__

Exercise regularly. Exercise can help you look good and feel good about yourself. Good physiques (体形) don’t just happen._ 4.__A healthy habit can be as simple as exercising 20 minutes to 1 hour three days a week. Working out can also lift your spirits.

Respect your body! Practicing good habits regular showering; taking care of your teeth, hair, and skin; wearing clean clothes, and so on—can help you build a positive body image.

__5._Your body is just one part of who you are. Your talent for comedy，a quickwit (智慧), and all the other things make you unique. So try not to let small imperfections take over.

A．Use this as an opportunity to discover what you’re good at.

B．Be yourself.

C．Having a positive body image means feeling satisfied with the way you look.

D．Just explore talents that you feel good about.

E．They take hard work, regular workouts, and a healthy diet.

F．The good news is that self­image and body image can be changed.

G．So, what can you do to develop a positive body image?

高三英语信息匹配中等难度题查看答案及解析