题目
题型：北京模拟题难度：来源：
B. resistance
C. speed
D. acceleration (加速度)
B. To slow down the falling speed.
C. To push against the air in the sky.
D. To accelerate the falling movement.
B. A light ball falls faster than a heavy ball.
C. A light ball and a heavy ball fall at the same speed.
D. A light ball and a heavy ball fall at different speed.
B. When air resistance equals gravity, objects fall at terminal speed.
C. Without air; all falling objects get faster and faster at the same rate.
D. Slippers (拖鞋) and boots (靴子) fall at the same speed because they have the same shape
答案
核心考点
试题【阅读理解。1. Falling objects are pulled down to the ground by _____. A. gravityB. res】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
greenhouse gases they send out, which is thought to be responsible for global warming.
Thanks to special bacteria in their stomachs, kangaroo flatulence (肠胃气胀) contains no methane (甲烷)
and scientists want to transfer that bacteria to cattle and sheep who produce large quantities of the harmful
gas.
While the usual image of greenhouse gas pollution is a billowing smokestack (烟囱) pushing out carbon
dioxide, farm animals" passing wind contribute a surprisingly high percentage of total emissions (排放物) in
some countries. "Fourteen percent of emissions from all sources in Australia is from enteric methane from
cattle and sheep," said Athol Klieve, a senior research scientist with the Queensland state government.
"And if you look at another country such as New Zealand, which has got a much higher agricultural base,
they"re actually up around 50 percent," he said.
Researchers say the bacteria also makes the digestive process much more efficient and could potentially
save millions of dollars in feed costs for farmers.
But it will take researchers at least three years to isolate (分离) the bacteria, before they can even start to
develop a way of transferring it to cattle and sheep.
Another group of scientists, meanwhile, has suggested Australians should farm fewer cattle and sheep and
just eat more kangaroos. And about 20 percent of health-conscious Australians are believed to eat the national
symbol already.
"It"s low in fat, it"s got high protein levels and it"s very clean in the sense that basically it"s the free-range
(放养的) animal," said Peter Ampt of the University of New South Wales"s institute of environmental studies.
B. to help Australian farmers to earn more money
C. so that they can protect Australian ecosystem
D. so that they can make full use of special bacteria
B. less cattle and sheep are raised in New Zealand
C. farm animals are to blame for greenhouse gases
D. New Zealand has the most animals in the world
B. warn farmers of the danger of animal waste
C. illustrate the possible solutions to pollution
D. present a recent study on global warming
B. is low in fat
C. it is cheaper than beef
D. it is cleaner than sheep
began moving up through the nation"s schools, it became clear that a new kind of culture was coming out.
Their achievements are made in the nation"s best universities, where mathematics, science and engineering
departments have taken on a decidedly Asian character. This special liking for mathematics and science is
partly explained by the fact that Asian-American students who began their education abroad arrived in the
US with a solid grounding in mathematics but little or no knowledge of English. They are also influenced by
the promise of a good job after college. Asians feel there will be less unfair treatment in areas like mathematics
and science because they will be judged more objectively (客观). And the money spent on education is more
immediately returned in something like engineering than with an arts degree.
Most Asian-American students owe their success to the influence of parents who are determined that their
children should take full advantage of what the American educational system has to offer. An effective measure
of parental attention is homework. Asian parents spend more time with their children than American parents
do, and it helps. Many researchers also believe there is something in Asian culture, such as family value, the
importance of education and so on that lead to their success.
Both explanations for academic success worry Asian Americans because of fears that they could cause
the native Americans" unhappiness. Many can remember when Chinese, Japanese and Filipino immigrants (移
民) were unequally treated because of social separation. Indeed, it was not until 1952 that laws were laid down
giving all Asian immigrants the right to citizenship.
B. there is a wide difference between Asian and Western cultures
C. they know little about American cultures and Western cultures
D. their English is not good enough
B. people with an arts degree are looked down upon
C. they can"t find a job with an arts degree
D. they can earn more money after graduation
B. still worry about unfair treatment in society
C. generally feel it a shame to have to depend on their parents
D. feel they are mistreated because of limited knowledge of English
B. Asian culture and a solid base in basic mathematics
C. hard work and parental help
D. hard work and a limited knowledge of English
within a fairly small mature estate community. Times have changed, and we now cover a far greater area and
children travel to the school from as far a field as Benwell. Parents now have the choice of selecting schools
for their children"s education and many parents choose Mead Vale.
We are a Community Primary School administered by the School Governing Board which is responsible to
the North Somerset Council Education Board. Present school roll is around 415 with space for 420 in total. We
are delighted that we were awarded "Beacon Status" in 2002 and are pleased to share our expertise with other
schools. Last year we had visits from as far away as South Africa and Spain. We are a primary school covering
ages 4-11 and on transfer from here parents usually choose Word Comprehensive, Priory Comprehensive or
Wyvern Comprehensive. We feel the advantage of a Primary School is the continuity of education from 4-11
and the greatly reduced trauma involved in moving schools from Infant to Junior or First to Middle at the age
of 7. We are convinced of the benefit of this and deliberately structure the school in phases at four levels:
Foundation: the reception year-a separate special early years curriculum;
Years l & 2: the first two years of the national curriculum- previously infants;
Years 3 & 4: the third and fourth year of the national curriculum-previously lower juniors;
Years 5 & 6: the fifth and sixth years of the national curriculum-previously upper juniors.
In each phase the children stay with the same teacher. It is likely that they will have only 4 different class
teachers during their seven years with us.
B. he is proud of the achievements the school has gained
C. he will let the children have four teachers each year
D. he thinks these seven years will reduce trauma involved in the transfer
B. Term.
C. Part.
D. Stage.
Mead Vale-M; Community Primary School-C; the School Governing Board-S;
North Somerset Council Education Board- N; UK-U
B. U-N-S-C-M
C. N-U-C-S-M
D. N-U-S-C-M
B. Have a "Beacon Status" award; carry on the continuity of education.
C. Carry on the continuity of education; reduce trauma involved in transferring schools.
D. Reduce trauma involved in transferring schools; divide the students into different phases.
in their sleep. 1.____ However, they have been valued as necessary to a person"s health and happiness.
Historically people thought dreams contained messages from God. It was only in the twentieth century
that people started to study dreams scientifically believing that they tell about a person"s character. 2.____
He believed that dreams allow a person to express fantasies or fears, which would be socially unacceptable
in real life.
The second theory to become popular was Carl Jung"s compensation theory. Jung, a former student of
Freud, said that the purpose of a dream is not to hide something, but rather to communicate it to the dreamer.
3.____Thus, people who think too highly of themselves may dream about falling; those who think too little
of themselves dream of being heroes.
Using more recent research, William Domhoff from the University of California found that dreaming is a
mental skill that needs time to develop in humans. 4.____ Until they reach age five, they cannot express very
well what their dreams are about. Once people become adults, there is little or no change in their dreams. The
dreams of men and women differ. For instance.
The characters that appear in the dreams of men are often other men, and often involve physical aggression.
The meaning of dreams continues to be difficult to understand. 5.____ If you dream that a loved one is
going to die, do not panic. The dream may have meaning, but it does not mean that your loved one is going to
die.
B. However, people should not take their dreams as reality.
C. They have been considered as meaningless nighttime journeys.
D. It gives scientists chances to better understand human mind.
E. Children do not dream as much as adults.
F. They think their mind is trying to tell them something.
G. First, there was Sigmund Freud"s theory.
complaining as well.
Scientists in the United States studied a group of 144 dental patients almost half of whom had red hair. They
found that the red-haired group were more sensitive to pain and as a result were twice as likely to avoid visiting
the dentist.
Previous research had shown that redheads were more resistant to the effects of local anaesthesia (局部麻
醉) than people with other hair colours.
The scientists say that this red-haired sensitivity to pain stems from the actions of a gene called MCIR. This
is responsible for the production of melanin which gives skin and hair its colour. In about five percent of white
people the gene is mutated (突变) leading to fair skin and red hair.
Researchers say there are some people with the gene in the brain and that this could affect pain sensitivity.
Professor Daniel Sessler from the Cleveland Clinic in the United States is one of the authors of the study. He
says the research is a considerable scientific breakthrough.
"Red hair is the first phenotype (表现某显性特征的生物个体或群体) of anaesthetic requirement in humans. And what I mean by phenotype is an external (外部的) characteristic."
"So suppose you are walking down the street and you see someone who"s a little older and a little younger-
that tells you nothing about their anaesthetic requirement. You see a man and a woman-that tells you nothing
about their anaesthetic requirement. But you see a redhead-aha! You know that person is going to require 20
percent more general anaesthesia."
From my own personal experience I would say that there is some merit to this idea. I have found that I have
had to ask dentists for extra anaesthetic in the middle of procedures.
Some dentists argue that a greater sensitivity to pain might actually benefit redheads and drive them to see
the dentist more quickly. In my own case I can prove that is definitely not true.
B. usually more sensitive to some painful things
C. just well-known for their good temper and strong pain sensitivity
D. good-looking with fair skin and red hair
B. The mutated gene leading to fair skin and red hair.
C. Some persons with this gene in the brain.
D. An external characteristic of a person.
B. someone"s gender and figure
C. someone"s teeth and the skills of the dentist
D. someone"s external characteristic
B. the results of this red-haired sensitivity to pain will be the same
C. the writer is a red-haired person
D. redheads have many benefits of being red-haired
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