阅读理解。 Solar electric systems pay off most quickly for consumers who use a l
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| 阅读理解。 |
Solar electric systems pay off most quickly for consumers who use a lot of energy because extra
charges are given for heavy use, but the solar system still makes sense for low-energy users such as
myself.
So much of Americans" carbon footprint results from buildings-about 43%, according to the U.S.
Department of Energy. I"m in a household of 1.5 (mom and 7-year-old), and we use only about 4
kilowatt hours of electricity per day, something we"ve managed through behavioral changes, such as
turning off the lights in rooms after we"ve exited, and through in-home efficiencies (效率), such as
swapping out all my light bulbs for energy-saving ones and using power boards that can turn off DVD
players, coffee makers and other electrical equipment.
Using less electricity means I can get by with a smaller, less expensive solar system that not only
covers my use but also produces a credit on my power bill. Going solar also meant my house was
upgraded with a time-of-use meter. This type of meter allows me to receive credit for the electricity I
produce during peak hours when electricity costs the most, but pay the least for the electricity during
off-peak hours, when I recharge my cell phone and laptop and perform other tasks requiring power.
The downsides are that I am tied in to the grid (电网) and still affected by power failure, and I now
have solar panels (太阳能电池板) that need to be cleaned. It"s a subject of debate, but REC Solar said
dirty panels decrease energy production by 6% to 8%.Many panel producers recommend cleaning
panels at least once during the summer. I wash mine whenever they look dirty or dotted with bird
droppings, which is about every other week.
I think $6,000 is a small price to pay, not only for panels that should produce my next 20 years of
electricity, but also for the greenhouse gases I"m not creating. |
| 1.What is mainly talked about in this article? |
A. The ways of cutting power bills.
B. The tips on reducing electricity use.
C. The benefits of using solar systems.
D. The importance of protecting the environment. |
| 2.Why does the writer recharge her mobile phones during off-peak hours? |
A. To save credit.
B. To save time.
C. To save energy.
D. To save money. |
| 3.The underlined word "downside" in Paragraph 4 is close in meaning to ______. |
A. discount
B. disadvantage
C. disapproval
D. disagreement |
| 4.The author cleaned her power panels ______. |
A. to make them work properly
B. to protect the environment
C. to make them look better
D. to avoid power failure |
答案
| 1-4: CDBA |
举一反三
任务型阅读。
阅读下面的短文，请根据短文后的要求答题(请注意问题后的词数要求)。 |
You might think that "global warming" means nothing more than a rise in the world"s temperature.
But rising sea levels caused by it have resulted in the first evacuation (撤离) of an island nation-the
citizens of Tuvalu will have to leave their homeland.
During the 20th century, sea level rose 8-12 inches. As a result, Tuvalu has experienced lowland
flooding of salt water which has polluted the country"s drinking water.
Paani Laupepa, a Tuvaluan government official, reported to the Earth Policy Institute that the nation
suffered an unusually high number of fierce storms in the past ten years. Many scientists connect higher
surface water temperatures resulting from global warming to greater and more damaging storms.
Laupepa expressed dissatisfaction with the United States for refusing to sign the Kyoto Protocol, an
international. agreement calling for industrialized nations to reduce their greenhouse gas emissions (导
致温室效应的气体排放 ) , which are a main cause of global warming. "By refusing to sign the
agreement, the US has effectively taken away the freedom of future generations of Tuvaluans to live
where their forefathers
have lived for thousands of years," Laupepa told the BBC.
Tuvalu has asked Australia and New Zealand to allow the gradual move of its people to both
countries .
Tuvalu is not the only country that is vulnerable(易受影 响的) to rising sea levels. Maumoon
Gayoon, president of the Maldives, told the United Nations that global warming has made his country
of 311,000 an "endangered nation". |
1. What is the direct cause of more and fiercer storms according to scientists? (no more than 8 words)
______________________________________________________________________________
2. Why was Laupepa not satisfied with the United States? (no more than 10 words)
______________________________________________________________________________
3. Which country" s situation is similar to that of Tuvalu ? (no more than 2 words)
______________________________________________________________________________
4. What is the text mainly about? (no more than 7 words)
______________________________________________________________________________ |
| 阅读理解。 |
Even a small reduction in salt in the diet can be a big help to the heart. A new study used a computer
model to predict how just three grams less a day would affect heart disease in the United States.
The result:10％ fewer heart attacks.8％ fewer storkes.4％ fewer deaths.11％ fewer new cases of
heart disease. And 240 billion dollars in health care savings.
Researchers found it could prevent 100,000 heart attacks and 92,000 deaths every year.
The study is in the New England Journal of Medicine. Kirsten Bibbins-Domingo at the University of
California San Francisco was the lead author. She says people would not even notice a difference in
taste with three grams, or one-half teaspoon, less salt per day. The team also included researchers at
Stanford and Columbia University.
Each gram of salt contains four hundred milligrams of sodium(钠),which is how foods may list their
salt content.
The government says the average American man eats ten grams of salt a day. The American Heart
Association advises no more than three grams for healthy people. It says salt in the American diet has
increased fifty percent since the nineteen seventies, while blood pressures have also risen. Less salt can
mean a lower blood pressure.
New York City Mayor Michael Bloomberg is leading an effort called the National Salt Reduction
Initiative. The idea is to put pressure on food companies and restaurants. Critics call it government
interference.
Mayor Bloomberg has already succeeded in other areas, like requiring fast food places in the city to list
calorie information. Now a study by the Seattle Children"s Research Institute shows that the calorie
information on the menu can influence what parents order for their children. |
| 1. According to the passage, what disease is not related to salt in diet? |
A. cancer
B. stroke
C. blood pressure
D. heart attack |
| 2.We can tell from the passage that now heart attacks occur in the US every year. |
A. 240,000
B. 900,000
C. 100,000
D. 92,000 |
| 3. It can be inferred from the passage that . |
A. all the heart diseases result from eating too much salt
B. the American Heart Association suggests less than 3 grams of salt a day for everyone
C. Americans ate no more than 5 grams of salt per day in the 1970s
D. the less salt one eats, the healthier he will be |
| 4. The National Salt Reduction Initiative aims to . |
A. attract the public attention to the problem
B. require fast food places to list salt information
C. inform people of the harm that salt does to health
D. put pressure on food companies and restaurants |
| 5. The last paragraph mainly tells us . |
A. Bloomberg has made some other efforts to improve people"s health
B. Bloomberg is very successful in his career
C. parents must pay great attention to calorie information
D. a new study is being done about calorie information |
| 阅读理解。 |
The Diet Zone: A Dangerous Place
Diet Coke, diet Pepsi, diet pills, no-fat diet, vegetable diet… We are surrounded by the word "diet"
everywhere we look and listen. We have so easily been attracted by the promise and potential of diet
products that we have stopped thinking about what diet products are doing to us. We are paying for
products that harm us psychologically and physically.
Diet products significantly weaken us psychologically. On one level, we are not allowing our brain to
admit that our weight problems lie not in actually losing the weight, but in controlling the consumption
(消耗) of fatty, high-calorie, unhealthy foods. Diet products allow us to jump over the thinking stage
and go straight for the scale(秤)instead. All we have to do is to swallow or recognize the word "diet" in
food labels (标签).
On another level, diet products have greater psychological effects. Every time we have a zero-calorie
drink, we are telling ourselves without our awareness that we don"t have to work to get results. Diet
products make people believe that gain comes without pain, and that life can be without resistance (抵
抗) and struggle.
The danger of diet products lies not only in the psychological effects they have on us, but also in the
physical harm that they cause. Diet foods can indirectly harm our bodies because consuming them
instead of healthy foods means we are preventing our bodies from having basic nutrients (营养成分).
Diet foods and diet pills contain zero calorie only because the diet industry has created chemicals to
produce these wonder products. Diet products may not be nutritional, and the chemical that go into
diet products are potentially dangerous.
Now that we are aware of the effects that diet products have on us, it is time to seriously think about
buying them. Losing weight lies in the power of minds, not in the power of chemicals. Once we realize
this, we will be much better able to resist diet products, and therefore prevent the psychological harm
that comes from using them. |
| 1. From Paragraph 1, we learn that _____. |
A. diet products fail to bring out people"s potential
B. people have difficulty in choosing diet products
C. diet products are misleading people
D. people are fed up with diet products |
| 2. One psychological effect of diet products is that people tend to _____. |
A. try out a variety of diet foods
B. hesitate before they enjoy diet foods
C. pay attention to their own eating habits
D. watch their weight rather than their diet |
| 3. In Paragraph 3, "gain comes without pain" probably means _____. |
A. losing weight is effortless
B. it costs a lot to lose weight
C. diet products bring no pain
D. diet products are free from calories |
| 4. Diet products indirectly harm people physically because such products _____. |
A. are over-consumedB. lack basic nutrients
C. are short of chemicalsD. provide too much energy |
| 阅读理解。 |
Feel tired lately? Has a doctor said he can"t find anything wrong with you? Perhaps he has sent you to
a hospital, but all the advanced equipment there shows that there is nothing wrong with you.
Then, consider this: you might be in a state of sub-health (亚健康). Sub-health, also called the third
state or gray state, is explained as a borderline(界限) state between health and disease.
According to the survey by the National Health Organization, over 45 percent of sub-healthy people
are middle-aged or elderly. The percentage is even higher among people who work in management
positions as well as students around exam-week.
Symptoms include a lack of energy, depression, slow reactions, insomnia, anger, and poor memory.
Other symptoms include shortness of breath, sweating and aching in the waist and legs.
The key to preventing and recovering from sub-health, according to some medical experts, is to form
good living habits, alternate work and rest, exercise regularly, and take part in open air activities.
As for meals, people are advised to eat less salt and sugar. They should also eat more fresh vegetables, fruits, fish because they are rich in nutritional elements -- vitamins and other elements that are important to
the body.
Nutrition experts point out that it is not good to eat too much at one meal because it may cause
unhealthy changes in the digestive tract (消化道). They also say that a balanced diet is very helpful in
avoiding sub-health. |
| 1. According to this passage, which of the following is true? |
A. When you are in a state of sub-health, you should stay at home and keep silent.
B. When you are in a state of sub-health, you should go to see a doctor and buy some medicine.
C. When you are in a state of sub-health, you should have yourself examined in foreign countries.
D. When you are in a state of sub-health, you should find out the reasons and relax yourself. |
| 2. It may be easy for middle-aged people to get sub-healthy because _________. |
A. they have used up their energy
B. they have lost their living hopes
C. they have more pressure in life and work
D. they begin to get older |
| 3. The key to preventing you from falling into a state of sub-health is that you should ________. |
A. work hard
B. sleep more
C. form good living habits
D. take more medicine |
| 4. The underlined word "alternate" in this passage is closest in meaning to _________. |
A. arrange by turns
B. cause to take place
C. keep oneself busy with
D. get tired of |
阅读理解。
阅读下面一篇短文，从所给选项中选出最恰当的句子,并将其字母标号填在相应的横线上。选项中有两项为多余选项。 |
Have you ever felt sick or had a headache during a test? Have you ever been so worried about
something that you can"t sleep at night? 1 This worry in your mind can made your body feel bad.
You may feel angry, frustrated, scared, or afraid-which can give you a stomachache or a headache.
2 Good or normal stress might happen when you"re called to answer a question in class or when
you have to give a speech. This kind of stress that can help you to get things better done. 3
But bad stress can happen if the stressful feelings keep going over a long time. You may not feel
well if your parents are fighting, if a family member is sick, if you"re having problems at school, or if
you"re going through anything else that makes you upset every day. 4
5 That means making good decisions about how to spend your time. If you"re only dealing with
school stuff and have no time to play, you can get stressed. Make sure you keep yourself in mind:
Sleep, Exercise , Leisure(休闲),and Food. If you take care of yourself and get enough sleep and food,
and if you exercise and leave time for fun stuff, you"ll probably be less stressed out! |
A. However, there are two different kinds of stress.
B. Can you tell a kind of stress from another one?
C. The best way to keep stress away is to have a balanced life.
D. That kind of stress isn"t going to help you, and it can actually make you sick.
E. Since bad stress is harmful for us, you"d better try to change it into good stress.
F. If so, then you know what stress is. Stress is what you feel when you are worried or
uncomfortable about something
G. For example, you may do a better job on your test if the stress pushes you to prepare
well before the test. |
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