单选题It took us a long time to mend the house. A.build B.destroy C.design D.repair
单选题The lecture is so dull that he can't focus his attention on itA. dependB. concentrateC. relyD. put
单选题What makes a major success in Los Angeles is the Ustrength/U of his public support.
单选题The Little Foxes, a
drama
by Lillian Hellman, was first produced in New York in 1939.
单选题California—A Land of Variety and Contrast California is a land of variety and contrast. Almost every type of physical land feature, sort of arctic ice fields and tropical jungles can be found within its borders. Sharply contrasting types of land often lie very close to one another. People living in Bakersfield, for instance, can visit the Pacific Ocean and the coastal plain, the fertile San Joaquin Valley, the arid Mojave Desert, and the high Sierra Nevada, all within a radius of about 100 miles. In other areas it is possible to go snow skiing in the morning and surfing in the evening of the same day, without having to travel long distance. Contrast abounds in California. The highest point in the United States (outside Alaska ) is in California, and so is the lowest point (including Alaska). Mount Whitney, 14,494 feet above sea level, is separated from Death Valley, 282 feet below sea level, by a distance of only ]00 miles. The two areas have a difference in altitude of almost three miles. California has deep, clear mountain lakes like Lake Tahoe, the deepest in the country, but it also has shallow, salty desert lakes. It has Lake Tulainyo, 12,020 feet above sea level, and the lowest lake in the country, the Salton Sea, 236 feet below sea level. Some of its lakes, like Owens Lake in Death Valley, are not lakes at all: they are dried up lake beds. In addition to mountains, lakes, valleys, deserts, and plateaus, California has its Pacific coastline, stretching longer than the coastlines of Oregon and Washington combined.
单选题Weight on and off the Earth
We are so used to our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted. Because we can feel that things are heavy, we think of "weight" as being a fixed quality in an object, but it is not really fixed at all. If you could take a one-pound packet of butter 4,000 miles out from the earth, it would weigh only a quarter of a pound.
Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space? The reason is this: all objects have a natural attraction for all other objects; this is called gravitational attraction. But this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4,000 miles from the center. When we took the butter 4,000 miles out, it was 8,000 miles from the center, which is twice the distance. If you double the distance between two objects, their gravitational attraction decreases two times two. If you treble the distance, it gets nine times weaker (three times three) and so on.
So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth.
What about the weight of our pound of butter on the surface of the moon? At the distance the pull of the earth is about 4,000 times smaller than it is here on the surface, so we can forget all about the earth-pull on our butter.
On the other hand, on the moon there will be an attraction between the butter and the moon, but the butter will weigh only about one-sixth as much as it does on the earth. This is because the moon is so much smaller than the earth. The amount of gravitational pull that a body produces depends on the amount of material in it. A packet of butter has a gravitational pull of its own; but this is very small in relation to the pull of something as large as the moon, or the earth, or the sun.
单选题
阅读下面这篇短文,短文后列出了7个句子,请根据短文的内容刈每个句子作出判断。如果该句提供的是正确信息,请选择A项:如果该句提供的是错误信息,请选择B项:如果该句的信息文章中没有提及,请选择C项。
{{B}}Mother Nature Shows Her Strength{{/B}} Tornadoes (龙卷风)
and heavy thunderstorms moved across the Great Lakes and into Trumbull County on
Saturday evening. The storms were dramatic and dangerous. George
Snyder was driving the fire truck down Route 88 when he first noticed that a
funnel (漏斗状的) cloud was behind him. "I stopped the truck and watched the funnel
cloud. It was about 100 feet off the ground and I saw it go up and down for a
while. It was moving toward Bradley Road and then suddenly it disappeared."
Snyder said. Snyder only saw one of the funnel clouds that
passed through northeastern Ohio on Saturday. In Trumbull County, a tornado
turned trees onto their sides. Some trees fell onto houses and cars. Other trees
fell into telephone and electrical wires as they went down.
Amanda Symcheck was having a party when the storm began. "I knew something was
wrong" she said. "1 saw the sky go green and pink (粉红色). Then it sounded like a
train rushing toward the house. I started crying and told everyone to go to the
basement for protection." The tornado caused a lot of damage to
cars and houses in the area. It will take a long time and much money to repair
everything. There was also serious water, damage from the thunderstorms. The
heavy rains and high wind caused the power to go out in many homes.
The storms caused serious flooding in areas near the river More than four
inches of rainfall in parts of Trumbull County. The river was so high that the
water ran into streets and houses. Many streets had to be
closed to cars and trucks because of the high water This made it difficult for
fire trucks, police cars, and other rescue vehicles to help people who were in
trouble. Many people who live near the river had to leave their
homes for their own safety. Some people reported five feet of water in their
homes. Local and state of officials opened emergency shelters for the people who
were evacuated (撤走). The Red Cross served meals to them. "This
was a really intense storm." said Snyder. "People were afraid, Mother Nature
call befierce. We were lucky this time. No one was
killed."
单选题Suddenly the yen will take a big {{U}}fluctuation{{/U}} and wipe out that advantage we worked so hard to create,
A, spring B. sling
C. swing D. string
单选题UBurdened/U with being a superwife, supermom, super church member, and superwoman, Jennifer feels she has lost control of her Life.
单选题下面有3篇短文,每篇短文后有5道题。请根据短文内容,为每题定1个最佳选项。{{B}}第一篇{{/B}}
The News Industry in US
Why do so many Americans distrust what they read in their newspapers? The
American Society of Newspaper Editors is trying to answer this painful question.
The organization is deep into a long serf-analysis known as the journalism
credibility project. Sad to say, this project has turned out to
be mostly low-level findings about factual errors and spelling and grammar
mistakes, combined with lots of head-scratching puzzlement about what in the
world those readers really want. But the sources of distrust go
way deeper. Most journalists learn to see the world through a set of standard
templates (patterns) into which they plug each day's events. In other words,
there is a conventional story line in the newsroom culture that provides a
backbone and a ready-made narrative structure for otherwise confusing
news. There exists a social and cultural disconnect between
journalists and their readers, which helps explain why the "standard templates"
of the newsroom seem alien to many readers. In a recent survey, questionnaires
were sent to reporters in five middle-size cities around the country, plus one
large metropolitan area. Then residents in these communities were phoned at
random and asked the same questions. Replies show that compared
with other Americans, journalists are more likely to live in upscale
neighborhoods, have maids, own Mercedeses, and trade stocks, and they're less
likely to go to church, do volunteer work, or put down roots in a
community. Reporters tend to be part of a broadly defined social
and cultural elite, so their work tends to reflect the conventional values of
this elite. The astonishing distrust of the news media isn't rooted in
inaccuracy or poor reportorial skills but in the daily clash of world views
between reporters and their readers. This is an explosive
situation for any industry, particularly a declining one. Here is a troubled
business that keeps hiring employees whose attitudes vastly annoy the customers.
Then it sponsors lots of symposiums and a credibility project dedicated to
wondering why customers are annoyed and fleeing in large numbers. But it never
seems to get around to noticing the cultural and class biases that so many
former buyers are complaining about. If it did, it would open up its diversity
program, now focused narrowly on race and gender, and look for reporters who
differ broadly by outlook, values, education, and
class.
单选题The news will
horrify
everyone.
单选题Due to the tilt of Neptune’s axis, the Sun heats the planet’s northern and southern {{U}}hemispheres{{/U}} unequally.
单选题The church Uforecasts/U that by 2015 this number will increase to nearly to million.
单选题{{B}}第三篇{{/B}}
Renewable Energy Sources
Today petroleum (石油)provides around 40% of the world's energy needs,
mostly fuelling automobiles. Coal is still used, mostly in power stations, to
cover one-quarter of our energy needs, but it is the least efficient,
unhealthiest and most environmentally damaging fossil fuel(矿物燃料). Natural gas
reserves could fill some of the gap from oil, but reserves of that will not last
into the 22nd century either. Most experts predict we will exhaust easily
accessible reserves within 50 years. Less polluting renewable energy sources
offer a more practical long-term energy solution. "Renewable" refers to
the fact that these resources are not used faster than they can be
replaced. Hydroelectric(水力发电的) power is now the most common form
of renewable energy, supplying around 20% of world electricity. China's Three
Gorges Dam is the largest ever. At five times the size of the US's Hoover Dam,
its 26 turbines(涡轮机) will generate the equivalent energy of 18 coal-fired power
stations. It will satisfy 3% of China's entire electricity demand.
In 2003, the first commercial power station to use tidal (潮汐的)currents in
the open sea opened in Norway. It is designed like windmill (风车), but others
take the form of turbines. As prices fall, wind power has become
the fastest growing type of electricity generation-quadrupling (翻两番)worldwide
between 1999 and 2005. Modem wind farms consist of turbines that generate
electricity. Though it will be more expensive, there is more than enough wind to
provide the world's entire energy needs. Wind farms come in onshore and offshore
forms. They can often end up at spots of natural beauty, and are often unpopular
with residents. And turbines are not totally harmless, they can interfere with
radar, alter climate and kill sea birds. Scotland is building Europe's largest
wind farm, which will power 200, 000 homes. The UK's goal is to generate
one-fifth of power from renewable sources, mainly wind, by 2020. But this may
cause problems, because wind is unreliable.
单选题下面有3篇短文,每篇短文后有5道题,每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题,从4个选项中选择1个最佳答案。
{{B}}第一篇{{/B}}
It is hard to predict how science is
going to turn out, and if it is really good science it is impossible to predict.
If the things to be found are actually new, they are by definition unknown in
advance. You cannot make choices in this matter. You either have science or you
don't, and if you have it you are obliged to accept the surprising and
disturbing pieces of information, along with the neat and promptly useful
hits, The only solid piece of scientific truth abut which I feel
totally confident is that we are profoundly ignorant about nature. Indeed, I
regard this as the major discovery of the past hundred years of biology. It is,
in its way, an illuminating piece of news. It would have amazed the brightest
minds of the 18th. century Enlightenment to be told by any of us how little we
know and how bewildering seems the way ahead. It is this sudden confrontation
with the depth and scope of ignorance that represents the most significant
contribution of the 20th century science to the human intellect. In
earlier times, we either pretended to understand how things worked or ignored
the problem, or simply made up stories to fill the gaps. Now that we have begun
exploring in earnest, we are getting glimpses of how huge the questions are, and
how far from being answered. Because of this, we are depressed. It is not so bad
being ignorant if you are totally ignorant; the hard thing is knowing in some
detail the reality of ignorance, the worst spots and here and there the
not-so-bad spots, but no true light at the end of the tunnel nor even any
tunnels that can yet be trusted. But we are making a beginning,
and there ought to be some satisfaction. There are probably no questions we can
think up that can' t be answered, sooner or later, including even the matter of
consciousness. To be sure, there may well be questions we can't think up and
therefore limits to the reach of human intellect, but that is another
matter. Within our limits, we should be able to work our way through to all our
answers, if we keep at it long enough, and pay
attention.
单选题Nowadays, a lot of young youngsters are still depended ______ their parents, even after they have grown up.A. toB. withC. onD. over
单选题The development of the transistor and integrated circuits revolutionized the electronics industry by allowing components to be packaged more {{U}}densely{{/U}}.
单选题He
demolished
my argument in minutes.
单选题She can speak French and German,
let alone
English.
单选题The most prominent characteristic of handwriting is undoubtedly letter formation and slant.A. presumablyB. in many casesC. surelyD. without bias
