–My TV set doesn’t work, the water tap is dri...

–-My TV set doesn’t work, the water tap is dripping and my car is still under repair!

–-You sure ________ bad luck these days.

A. are having       B. will have        　　C. had had          D. had

高三英语单项填空中等难度题查看答案及解析

–My TV set doesn’t work, the water tap is dripping and my car is still under repair!

–You sure ________ bad luck these days.

A. had           B. will have            C. had had          D. are having

高三英语单项填空中等难度题查看答案及解析

It doesn’t kill germs better than cooler water, but turning tap temperatures high, the US burns carbon equal to the emissions of Barbados.

People typically wash their hands seven times a day in the United States, but they do it at a far higher temperature than is necessary to kill germs, a new study says. The energy waste is equivalent to the fuel use of a small country.

It’s cold and flu season, when many people are concerned about avoiding germs. But forget what you think you know about hand washing, say researchers at Vanderbilt University. Chances are good that how you clean up is not helping you stay healthy; it is helping to make the planet sick.

Amanda R. Carrico, a research assistant professor at the Vanderbilt Institute for Energy and Environment in Tennessee, told National Geographic that hand washing is often “a case where people act in ways that they think are in their best interest, but they in fact have inaccurate beliefs or outdated perceptions.”

Carrico said, “It’s certainly true that heat kills bacteria, but if you were going to use hot water to kill them it would have to be way too hot for you to tolerate.”

She explained that boiling water, 212°F (99.98°C), is sometimes used to kill germs — for example, to clean drinking water that might be polluted with germs. But “hot” water for hand washing is generally within 104°F to 131°F (40°C to 55°C). At the high end of that range, heat could kill some germs, but the sustained contact that would be required would scald the skin.

Carrico said that after a review of the scientific literature, her team found “no evidence that using hot water that a person could stand would have any benefit in killing bacteria.” Even water as cold as 40°F (4.4°C) appeared to reduce bacteria as well as hotter water, if hands were scrubbed, rinsed (冲洗) and dried properly.

In fact, she noted that hot water can often have an unfavorable effect on hygiene. “Warmer water can harm the skin and affect the protective layer on the outside, which can cause it to be less resistant to bacteria,” said Carrico.

Using hot water to wash hands is therefore unnecessary, as well as wasteful, Carrico said, particularly when it comes to the environment. According to her research, people use warm or hot water 64 percent of the time when they wash their hands. Using that number, Carrico’s team calculated a significant impact on the planet.

“Although the choice of water temperature during a single hand wash may appear minor, when multiplied by the nearly 800 billion hand washes performed by Americans each year, this practice results in more than 6 million metric tons of CO2 equivalent emissions annually,” she said.

That’s roughly equal to the emissions of two coal-fired power plants, or 1,250,000 passenger vehicles, over the course of a year. It’s higher than the greenhouse gas emissions of small countries like EI Salvador or Armenia, and is about equivalent to the emissions of Barbados. If all US citizens washed their hands in cooler water, it would be like eliminating the energy-related carbon emissions of 299,700 US homes, or the total annual emissions from the US zinc or lead industries.

The researchers found that close to 70 percent of respondents said they believe that using hot water is more effective than warm, room temperature, or cold water, despite a lack of evidence backing that up, said Carrico. Her study noted research that showed a “strong cognitive (认知的) connection” between water temperature and hygiene in both the United States and Western Europe, compared to other countries, like Japan, where hot water is associated more with comfort than with health.

The researchers published their results in the July 2013 issue of International Journal of Consumer Studies. They recommended washing with water that is at a “comfortable” temperature, which they noted may be warmer in cold months and cooler in hot ones.

1.What does the writer mainly focus on when writing this passage?

A.Whether hot water helps kill germs effectively in hand washing.

B.How hot water contributes to the serious worsening of our planet.

C.Why the consumption of hot water is unnecessary and wasteful.

D.What the advantages and disadvantages of using hot water are.

2.The underlined word scald in paragraph six probably means_________.

A.burn B.improve

C.soften D.wrinkle

3.According to the passage, all the following share roughly the same CO2 emissions yearly EXCEPT______.

A.two coal-fired power plants B.US zinc or lead industries

C.1,250,000 passenger vehicles D.EI Salvador or Armenia

4.Which of the following is WRONG according to the passage?

A.Boiling water at 212°F (99.98°C) works effectively in killing germs.

B.Warmer water can damage the protective layer of the outside skin.

C.There is much difference between cold water and hot water in reducing bacteria.

D.Americans have inaccurate beliefs or outdated perceptions in hand washing.

5.Which of the following is the standard of a comfortable water temperature for washing hands?

A.Warmer in winter and cooler in summer.

B.Between 104°F to 131°F (40°C to 55°C).

C.Below 104°F (40°C) or above 131°F (55°C).

D.Warm enough to kill germs and clean up.

高三英语阅读理解中等难度题查看答案及解析

—Why did you leave the water running in the sink?

—My goodness! I guess I ____ to turn off the tap．

A．forgot     B．have forgotten          C．forget        D．had forgottten

高三英语单项填空简单题查看答案及解析

Imagine one day, the water taps in your house stop running. You have to buy water from shops. And still there isn’t enough for everyone. Your mother has to save the family’s shower water to do other things. Would you be able to stand that kind of life?

Probably not. But that’s what kids in Yemen are experiencing. Experts said Yemen is going to be the first country in the world to run out of water. According to a report, the capital, Sanaa, will run out of drinking water as early as 2025.

Because of the shortage, the government often cuts the water supply. Hannan, an 18-year-old from Lahej, told the Times: “In a good week we’ll have a water supply all week. But then the following week there will be water only for a day or two.”

Hannan said only rich people have enough water to use. They can buy water from the shops or from the water truck. Private companies own the trucks. They travel around the city every day to sell water – at very high prices.

“A lot of people can’t afford it,” she said.

The average person in Yemen uses 100 to 200 cubic meters of water per year. That is far below the international water poverty line of 1,000 cubic meters.

The government is thinking of making use of seawater. But it will cost a lot and it may not happen soon enough to help the people of Yemen.

1.The purpose of the text is to _______.

2.The underlined word “that” in Paragraph 2 refers to _____.

3.Hannan described _____.

4.The Yemen Government _____.

5.We can infer from the text that _____.

高三英语阅读理解中等难度题查看答案及解析

W: Bobby, turn that TV off and set the table. Dinner is almost ready.

M: OK. I’ll be right down…

W: 1 Your father’s plane was delayed, so he won’t be home until after 10:00.

M: Aw, man! Why does he always have to travel so much? 2

W: I know. Your sister and I feel the same way, but this is the way it has to be right now.

M: 3

W: That’s because I work from home. 4 Your father is gone a lot, but he also makes good money.

M: Why doesn’t he work from home?

W: 5 If he stayed at home, how would he ever sell anything?

E. I guess I’m lucky, but there are disadvantages, too.

F. Honey, there are only going to be three of us tonight.

G. Well, working in sales means you have to be on the road a lot.

高三英语其他题困难题查看答案及解析

Work means much to me. It is ______ of my life ______ air, water and sunlight.

高三英语单项填空简单题查看答案及解析

Work means much to me. It is ______ of my life ______ air, water and sunlight.

A. as much a part; as                       B. as a part as much; as

C. as a part much; as                       D. so much a part; as

高三英语单项填空中等难度题查看答案及解析

Work means much to me. It is _________ of my life _________ air, water and sunlight.

A. a part as much; as　　　　　　　　　　 B. so much a part; as

C. as a part much; as　　　　　　　　　　 D. as much a part; as

高三英语单项填空中等难度题查看答案及解析

—Jack is always complaining about not having any money．

—The problem is that he doesn't work hard and never ____．

A．does             B．had              C．did              D．has

高三英语单项填空中等难度题查看答案及解析