题目
题型:福建省高考真题难度:来源:
actually increases the risk.
Researchers from the University of lows based their findings on a review of 18 earlier studies that looked
at the association between sunscreen use and melanoma (黑素瘤). They said that they found flaws in studies
that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen
helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the
United States.
But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps
by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take
into account that those people most at risk for skin cancer-people with fair skin and freckles (雀斑), for
example-are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more
often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove
how well the products had been applied, said the new study.
B. facts
C. faults
D. failures
B. are more in danger of skin cancer
C. can be free from the harm of the sun
D. often expose themselves to the sun
B. the volunteers have proved the effect of sunscreen
C. the new study was based on the experiences of volunteers
D. the number of skin cancer patients is increasing in America
B. Sunscreen to Increase Skin Cancer
C. Skin Cancer Caused by Sunscreen
D. Skin Cancer Caused by Freckles
答案
核心考点
试题【阅读理解。 A new study has found no evidence that sunscreen, commonly used to red】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
the then President Bush. Through her on efforts, her letter was reproduced on over 250 donated billboards
(广告牌) across the country.
The response to her request for help was so huge that Poe established Kids For A Cleaner Environment
(Kids F.A.C.E.) in 1989. There are now 300,000 members of Kids F.A.C.E. worldwide and it is the world"s
largest youth environmental organization.
Poe has also asked the National Park Service to carry out a "Children"s Forest" project in every national
park. In 1992, she was invited one of only six children in the world to speak at the Earth Summit in Brazil
as part of the Voices of the future Program. In 1993, she was given a Caring Award for her efforts by the
Caring Institute.
Since the organization started, Kids F.A.C.E. members have distributed and planted over 1 million trees!
Ongoing tree-planting projects include Kids" Yards-the creation of backyard wildlife habitats (栖息地) and
now Kids F.A.C.E. is involved in the exciting Odyssey, which is a great way to start helping.
"We try to tell kids that it"s not OK to be lazy," she explains, "You need to start being a response,
environmentally friendly person now, right now, before you become a resource-sucking adult."
B. a project of litter recycling
C. a campaign launched by President Bush
D. a club of environmental protection
B. She donated billboards across the country.
C. She got positive responses for her efforts.
D. She joined the National Park Service.
B. started to protect wildlife
C. a wildlife-raising project
D. an environment park for kids
B. Poe sought help from a youth organization.
C. Kids F.A.C.E. members are from the U.S.
D. Kids are urged to save natural resources.
year and the temperature rarely dipping below l6℃. Rainforests have a great effect on the world environment
because they can take in heat from the sun and adjust the climate. Without the forest cover,these areas would
reflect more heat into the atmosphere, warming the rest of the world. Losing the rainforests may also influence
wind and rainfall patterns,potentially causing certain natural disasters all over the world.
In the past hundred years, humans have begun destroying rainforests in search of three major resources (资
源): land for crops, wood for paper and other products,land for raising farm animals. This action affects the
environment as a whole. For example, a lot of carbon dioxide (二氧化碳) in the air comes from burning the
rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much
more than we will benefit.
There are two main reasons for this. Firstly, when people cut down trees,generally they can only use the
land for a year or two. Secondly, cutting large sections of rainforests may provide a good supply of wood right
now, but in the long run it actually reduces the world"s wood supply.
Rainforests are often called the world"s drug store. More than 25% of the medicines we use today come
from plants in rainforests. However, fewer than l%of rainforest plants have been examined for their medical
value. It is extremely likely that our best chance to cure diseases lies somewhere in the world"s shrinking
rainforests.
B. bring about high rainfall throughout the world
C. rarely cause the temperature to drop lower than l6℃
D. reduce the effect of heat from the sun on the earth
B. Humans have begun destroying rainforests.
C. People have a strong desire for resources.
D. Much carbon dioxide comes from burning rainforests.
B. there is great medicine potential in rainforests
C. we will grow fewer kinds of crops in the gained land
D. the level of annual rainfall affects wind patterns
B. How to Protect Nature
C. Rainforests and the Environment
D. Rainforests and Medical Development
effort, and not much money, most of us could reduce our energy diets by 25 percent or more-doing the
Earth a favor while also helping our wallets.
Not long age. My wife, PJ, and I tried a new diet-not to lose a little weight but to answer an annoying
question about climate change. Scientists have reported recently that the world is bending up even faster
than predicted only a few years ago, and that the consequences could be severe if we don"t keep reducing
emissions (排放) of carbon dioxide (CO2) and other greenhouse gases that are trapping heat in our
atmosphere.
We decided to try an experiment. For one month we recorded our personal emissions of CO2. We
wanted to see how much we could cut back, so we went on a strict diet. The average US household (家
庭) produces about 150 pounds of CO2 a day by doing common-place things like turning on air-conditioning
or driving cars. That"s more than twice the European average and almost five times the global average,
mostly because Americans drive more and have bigger houses. But how much should we try to reduce?
For an answer, I checked with Tim Flannery, author of The Weather Makers: How Man Is Changing
the Climate and What It Means for Life on Earth. In his book, he had challenged readers to make deep cuts
in personal emissions to keep the world from reaching extremely important tipping points, such as the
melting (融化) of the ice sheets in Greenland or West Antarctica. "To stay below that point, we need to
reduce CO2 emissions by 80 percent," he said.
Good advice, I thought. I"d opened our bedroom windows to let in the wind. We"d gotten so used to
keeping our air-conditioning going around the clock. I"d almost forgotten the windows even opened. We
should not let this happen again. It"s time for us to change our habits if necessary.
B. To respond to climate change
C. To lose weight
D. To improve their health
B. burning points
C. melting points
D. boiling points
B. it seems possible for every household to cut emissions of CO2
C. the average US household produces about 3,000 pounds of CO2 a month
D. the average European household produces about 1,000 pounds of CO2 a month
B. Changing Habits Begins at Work
C. Changing Climate Sounds Reasonable
D. Reducing Emissions of CO2 Proves Difficult
Islands in Jersey. They had been looked after by zookeepers. No evolutionary strategies informed them how
to behave in this new Landscape of mountainous pine forest unoccupied by their king for 50 years. To the
researchers" surprise, they failed to make contact with a group of wild parrots imported from Mexico and set
free at the same time. Within 24 hours the reintroducing ended in failure, and the poor birds were back in cages,
on their way to the safety of the Arizona reintroduction programme.
Ever since then, the programme has enjoyed great success, mainly because the birds now being set free are
Mexican birds illegally caught in the wild, confiscated (没收) on arrival north of the border, and raised by their
parents in the safety of the programme. The experience shows how little we know about the behaviour and
psychology (心理) of parrots, as Peter Bennett, a bird researcher, points out:"Reintroducing species of high
intelligence like parrots is a lot more difficult. People like parrots, always treating them as nothing more than
peers or valuable "collectables"."
Now that many species of parrot are in immediate danger of dying out, biologists are working together to
study the natural history and the behaviour of this family of birds. Last year was an important turning point:
conservationists founded the World Parrot Trust, based at Hayle in Cornwall, to support research into both
wild and caged birds.
Research on parrots is vital for two reasons. Forest, as the Arizona programme showed, when reintroducing
parrots to the wild, we need to be aware of what the birds must know if they are to survive in their natural
home. We also need to learn more about the needs of parrots kept as pets, particularly as the Trust"s campaign
does not attempt to discourage the practice, but rather urges people who buy parrots as pets to choose birds
raised by humans.
B. It used to be home to parrots of their kind.
C. It is close to where they had been kept.
D. Pine trees were planted to attract birds.
A. can find their way back home in Jersey
B. are unable to recognize their parents
C. are unable to adapt to the wild
D. can produce a new species
B. We need to knows more about how to preserve parrots.
C. Many people are interested in collecting parrots.
D. Parrots" intelligence may someday benefit people.
B to set up comfortable homes for parrots
C. not to keep wild parrots as pets
D. not to let more parrots go to the wild
would take to design a public school that used 50 percent less energy, cost much less to build and obviously
improved student learning. "I think half of then fell off their chairs," Gerner says.
Gerner manages school facilities (设施) for Clark county, Nevada, a district roughly the size of
Massachusetts. By 2018, 143, 000 additional students will enter the already crowded public-education system.
Gerner needs 73 new schools to house them. Four architecture teams have nearly finished designing primary
school prototypes (样品); They plan to construct their schools starting in 2009. The district will then assess
how well the schools perform, and three winners will copy those designs in 50 to 70 new buildings.
Green schools are appearing all over, but in Clark County, which stands out for its vastness, such
aggressive targets are difficult because design requirements like more natural light for students go against the
realities of a desert climate. "One of the biggest challenges is getting the right site orientation (朝向)," Mark
McGinty, a director at SH Architecture, says. His firm recently completed a high school in Las Vegas. "You
have the same building, same set of windows, but if its orientation is incorrect and it faces the sun, it will be
really expensive to cool."
Surprisingly, the man responsible for one of re most progressive green-design competitions has doubts
about ideas of eco-friendly buildings. "I don"t believe in the new green religion," Gerner says. "Some of the
building technologies that you get are impractical. I"m interested in those that work." But he wouldn"t mind
if some green features inspire students. He says he hopes to set up green energy systems that allow them to
learn about the process of harvesting wind and solar power." "You never know what"s going to start the
interest of a child to study math and science," he says.
B. they showed strong disbelief.
C. they expressed little interest.
D. they burst into cheers.
B. Assessment-Design-Prototype-Construction.
C. Design-Assessment-Prototype-Construction.
D. Design-Prototype-Assessment-Construction.
B. Limited facilities.
C. The desert climate.
D. Poor natural resources.
B. They are out of date.
C. They are advanced.
D. They are practical.
最新试题
- 11951年获得和平解放的地区是A.云南B.新疆C.西藏D.台湾
- 2放射性在技术上有很多应用,不同的放射源可用于不同目的.下表列出了一些放射性元素的半衰期和可供利用的射线.元素射线半衰期钋
- 3(10分)△ABC中,已知三个顶点的坐标分别是A(,0),B(6,0),C(6,5),(1)求AC边上的高线BH所在的直
- 4将抛物线向上平移2个单位, 再向右平移3个单位,所得抛物线的解析式为( ).A.B.C.D.
- 5已知⊙O1和⊙O2相切,它们的半径分别为3和1,过O1作⊙O2的切线,切点为A,则O1A的长是
- 6如图是“黄河水系图”,读后完成下列各题:(1)、按要求填写地名。①黄河发源地是 ②黄河注入的
- 7某物体运动的速度图象如图,根据图象可知( )A.0~5s内的位移为10mB.0~2s内的加速度为1m/s2C.第1s末
- 8修辞方法与其他三项不同的一项是A.播种希望B.点燃创见的火种C.放飞理想D.酒杯盛满幸福
- 9为美化环境,同学们在教室内摆放了许多盆花,如果浇水过多过勤,就会导致根腐烂,甚至死亡,这是因为A.花盆中水分过多,影响根
- 10喜马拉雅山形成的原因是( )A.非洲板块与亚欧板块碰撞挤压形成的B.非洲板块与印度洋板块碰撞挤压形成的C.亚欧板块与太
热门考点
- 1若要萃取碘水中的碘,可从以下物质中选出萃取剂:①汽油、②四氯化碳、③酒精,其中可选用的是A.①③B.②③C.①②D.①②
- 2下列说法中不正确的是( )A.牛顿提出万有引力定律,并利用扭秤实验,巧妙地测出了万有引力常量B.牛顿第一定律、牛顿第
- 3如图,四边形ABCD是一防洪堤坝的横截面,AE⊥CD,BF⊥CD且AE=BF,∠D=∠C,问:AD与BC相等?说明你的理
- 4梳理提高:小明同学在复习过程中非常重视知识的归纳整理,并对所学过的知识进行了分类整理,下表是他归纳整理的一部分,请你帮他
- 5下列思想中,不属于传统文化先进性的是[ ]A、“为政以德”B、“仁者爱人”C、“兼爱“”非攻”D、“存天理、灭人
- 6阅读下文,完成文后各题。《红楼梦》作者不是曹雪芹?百年以来,关于曹雪芹是否是《红楼梦》作者的争论从未停止。最近,抚顺市社
- 7联合国将21世纪定义为“海洋世纪”。可燃冰是由天然气与水在一定条件下形成的可燃物质。在海洋资源开发中,受到越来越广泛的重
- 8All the vegetables in the shop _____. [ ]A. have been s
- 9小明在玩耍时把一很小铁球抛入水中,他发现铁球下沉到水中.小明作出以下的猜想:铁球可能是空心的。他准备设计实验进行探究。那
- 102010年3月5日,国务院总理温家宝在第十一届全国人民代表大会第三次会议上作《政府工作报告》。据此回答第1-2题。 1.