单项选择题

Save Energy At Home
On the average, Americans waste as much energy as two-thirds of the world's population consumes. That's largely the(51) of driving inefficient cars, using inefficient appliances (设备), and living and working in poorly insulated (隔热) buildings. Then what can you do to(52) the situation?
Buy energy-efficient products - Buy new appliances or electronics of the highest energy-efficiency rating. New energy-efficient models may cost more initially, but have a lower operating(53) over their lifetimes. The most energy-efficient models (54) the Energy Star label, which identifies products(55) use 20-40 percent less energy than standard new products．According to the EPA (美国环境保护署), the typical American household can save about $400 per year in (56) bills with products that carry the Energy Star.
Switch to compact fluorescent bulbs (荧光灯)－Change the three bulbs you use (57) in your house to compact fluorescents. Each compact fluorescent bulb will keep half a ton of CO2 out of the air. (58) its lifetimE. (59),compact fluorescent bulbs last ten times as long and can save $30 per year in electricity costs.
Set heating and cooling temperatures correctly － Check thermostats (温度自动调节器) in your home to make sure they are(60) at a level that doesn't waste energy.
Turn off the lights － Turn off lights and other electrical appliances such as televisions and radios when you're not(61) them. Install automatic timers for lights that people in your house frequently(62) to turn them off when leaving a room.
Let the sun shine in － The cheapest and most energy-efficient light and heat source is often right outside your window. On(63) days, open blinds (百叶穷窗)to let the sun light your home for freE.Also remember that(64) entering a I room equals passive solar heating. Even on cold winter days, sun streaming into a room can raise the temperature by several(65).
第 51 题
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B.result.
C.way
D.work

A.According
B.
Switch
C.____________
D.____________
E.
Set
F.
Turn
G.
Let
H.power
B.result.
C.way
D.work

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单项选择题

根据下列文章,请回答 16～22 题。Step Back in TimeDo you know that we live a lot longer now than the people who were born before us? One hundred years ago the average woman lived to be 45．But now，she can live until at least 80．One of the main reasons for people living longer is that we know how to look after ourselves better．We know which foods are good for US and what we have to eat to make sure our bodies get all the healthy things they neeD.We know why we sometimes get ill and what to do to get better again．And we know how important it is to do lots of exercise to keep our hearts beating healthily．But in order that we don’t slip back into bad habits，let's have a look at what life was like 100 years ago．Families had between 15 and 20 children，although many babies didn’t live long．Children suffered from lots of diseases，especially rickets(佝偻病)and scurvy(坏血病)，which are both caused by bad diets．This is because many-families were very poor and not able to feed their children well。Really poor families who lived in crowded cities like London and Manchester often slept standing up，bending over a piece of strin9，because there was no room for them to lie down．People didn’t have fridges until the l 920s．They kept fresh food cold by storing it ON windowsills(窗台板)，blocks of ice，or even burying it in the garden．Some children had to start work at the age oF.seven or eight to earn money for their parents．If you had lived l 00 years a90，you might well be selling matchsticks(火柴杆)(a job done by many children)or working with your dad by now．第 16 题 0n average women lived longer than men 100 years ago．A.RightB.WrongC.Not mentioned

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D.We
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But
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单项选择题

根据下列文章,请回答 16～22 题。The Doctor in AmericaSelf-employed private physicians who charge a fee for each patient visit have been the norm for American medical practicE.Most physicians have a contract relationship with one or more hospitals in their community．They refer their patients as needed to the hospital，which usually charges according to the number of days a patient stays and the facilities—X—rays，operating rooms。tests—he or she uses．Some medical doctors are on salary．Salaried physicians may work as hospital staff members，or residents，who are often still in trainin9．They may teach in medical schools．be hired by corporations to care for their workers or work for the federal government’s Public Health ServicE.Physicians are among the best-paid professionals in the United States．In the 1980s，it was not uncommon for medical doctors to earn incomes of more than$1 00，000 a year．Specialists，particularly surgeons，might earn several times that amount．Physicians list many reasons why they deserve to be SO well rewarded for their work．One reason is the long and expensive preparation required to become a physician in the United States．Most would—be physicians first attend college for four years，which can cost nearly $20．000 a year at one of the best private institutions．Prospective physicians then attend medical school for four years．Tuition alone can exceed$1 0，000 a year．By the time they have obtained their medical degrees，many young physicians are deeply in debt．They still face three to five years of residency(住院医生实习期)in a hospital，the first year as an apprentice physician．The hours are long and the pay is relatively low．Setting up a medical practice is expensive，too．Sometimes several physicians will decide to establish a group practice，SO they can share the expense of maintaining an office and buying equipment．These physicians also take care of each other’s patients in emergencies．Physicians work long hours and must accept a great deal of responsibility．Many medical procedures．even quite routine ones，involve risk．It is, Understandable that physicians want to be well rewarded for making decisions which can mean the difference between life and death．第 16 题 Many physicians in the US are self-employed private physicians．A.RightB.WrongC.Not mentioned

A.Most
B.They
C.
Some
D.Salaried
E.They
F.be
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L.Most
M.000
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T.Sometimes
U.These
V.
Physicians
W.Many
X.even
Y.It
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B.Wrong
[.Not