Deserts are found where there is little rainfall or where rain for a whole yea

  Deserts are found where there is little rainfall or where rain for a whole yea

题型:不详难度:来源:
  Deserts are found where there is little rainfall or where rain for a whole year falls in only a few weeks" time. Ten inches of rain may be enough for many plants to survive (存活)if the rain is
spread throughout the year, If it falls, within one or two months and the rest of the year is dry, those plants may die and a desert may form.   
Sand begins as tiny pieces of rock that get smaller and smaller as wind and weather wear them down. Sand dunes (沙丘) are formed as winds move the sand across the desert. Bit by bit, the
dunes grow over the years, always moving with the winds and changing the shape. Most of them are only a few feet tall, but they can grow to be several hundred feet high.
There is, however, much more to a desert than sand. In the deserts of the southwestern United States, cliffs (悬崖) and deep valleys were formed from thick mud that once lay beneath a sea more than millions of years ago. Over the centuries, the water dried up. Wind, sand , rain, heat and cold all wore away at the remaining rocks. The faces of the desert mountains are always changing –-very, very slowly ---as these forces of nature continue to work on the rock.
Most deserts have a surprising variety of life. There are plants, animals and insects that :have adapted to life in the desert. During the heat of the day, a visitor may see very few signs of living things, but as the air begins to cool in the evening, the desert comes to life. As the sun begins to rise again in the sky, the desert once again becomes quiet and lonely.
小题1:Many plants may survive in deserts when__________________.
A.the rain is spread out in a yearB.the rain falls only in a few weeks
C.there is little rain in a yearD.it is dry all the year round
小题2:Sand dunes are formed when___________________.
A.sand piles up graduallyB.there is plenty of rain in a year
C.the sea has dried up over the yearsD.pieces of rock get smaller
小题3:The underlined sentence in the third paragraph probably means that in a desert there is____________.
A.too much sandB.more sand than before
C.nothing except sandD.something else besides sand
小题4:It can be learned from the text that in a desert____________.
A.there is no rainfall throughout the yearB.life exists in rough conditions
C.all sand dunes are a few feet highD.rocks are worn away only by wind and heat

答案

小题1:A
小题2:A
小题3:D
小题4:B
解析
小题1:事实细节题,根据第一段第二句“…for many plants to survive if the rain is spread throughout the year”,throughout the year意思是“全年”或“一年中”。
小题2:事实细节题,根据第二段第二句和第三句“当风吹动沙子穿过沙漠、沙丘就形成了。一点一点沙丘会经过几年而增大”,而A项piles up gradually为“逐渐堆积起来”之意。
小题3:划线句子意思是“可是,对于沙漠来说,有的不仅仅是沙子”也就是说除了沙子还有其它的自然界的东西让沙漠发生变化,并且本段有所描述。
小题4:推理判断题,在最后一段中文章描述到“大多数沙漠都生有让人惊叹的生命,在白天,观光者能够看到很少的生命体,白天一片沉寂与荒凉,只有到晚上,沙漠才有了生机”,依此判断选B。
举一反三
Some people bring out the best in you in a way that you might never have fully realized on your own.My mom was one of those people.
My father died when I was nine months old,making my mom a single mother at the age of eighteen.While I was growing up,we lived a very hard life.We had little money,but my mom gave me a lot of love.Each night,she sat me on her lap and spoke the words that would change my life,“Kemmons,you are certain to be a great man and you can do anything in life if you work hard enough to get it.”
At fourteen,I was hit by a car and the doctors said I would never walk again.Every day,my mother spoke to me in her gentle,loving voice,telling me that no matter what those doctors said,I could walk again if I wanted to badly enough.She drove that message so deep into my heart that I finally believed her.A year later,I returned to school—walking on my own!
When the Great Depression(大萧条)hit,my mom lost her job.Then I left school to support the both of us.At that moment,I was determined never to be poor again.
Over the years,I experienced various levels of business success.But the real turning point occurred on a vacation I took with my wife and five kids in 1951.I was dissatisfied with the second-class hotels available for families and was angry that they charged an extra $2 for each child.That was too expensive for the average American family.I told my wife that I was going to open a motel(汽车旅馆)for families that would never charge extra for children.There were plenty of doubters at that time.
Not surprisingly,mom was one of my strongest supporters.She worked behind the desk and even designed the room style.As in any business,we experienced a lot of challenges.But with my mother’s words deeply rooted in my soul,I never doubted we would succeed.Fifteen years later,we had the largest hotel system in the world—Holiday Inn.In 1979 my company had 1759 inns in more than fifty countries with an income of $1 billion a year.
You may not have started out life in the best situations.But if you can find a task in life worth working for and believe in yourself,nothing can stop you.
小题1:What Kemmons’ mom often told him during his childhood was_______.
A.caringB.moving
C.encouragingD.interesting
小题2:According to the author,who played the most important role in making him walk back to school again?
A.Doctors.B.Nurses.C.Friends.D.Mom.
小题3:What caused Kemmons to start a motel by himself?
A.His terrible experience in the hotel.
B.His previous business success of various levels.
C.His mom’s support.
D.His wife’s suggestion.
小题4:Which of the following best describes Kemmons’ mother?
A.Modest,helpful and hard-working.
B.Loving,supportive and strong-willed.
C.Careful,helpful and beautiful.
D.Strict,sensitive and supportive.
小题5:Which of the following led to Kemmons’ success according to the passage?
A.Self-confidence,hard work,higher-education and a poor family.
B.Mom’s encouragement,clear goals,self-confidence and hard work.
C.Clear goals,mom’s encouragement,a poor family and higher education.
D.Mom’s encouragement,a poor family,higher education and opportunities.

题型:不详难度:| 查看答案
Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back.. Plants certainly cannot run away, and they lack teeth and claws. But plants can defend themselves by using both physical and chemical means.
Some plants have their own ways to keep animals away. For example, the leaves of the holly plant have sharp spines (刺) that discourage grass-eating animals. Holly leaves on lower branches have more spines than leaves on upper branches. This is because the lower leaves are easier for most animals to reach.
Some plants, such as the oak tree, have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material; eating such grasses wears down the animal"s teeth.
Many plants also have chemical defenses. Some plants produce chemicals that taste bitter or cause an unpleasant reaction. Some plants may fight against an attack by increasing the production of these chemicals. When a caterpillar (毛虫) bites a tobacco leaf, the leaf produces a chemical messenger. This messenger sends to the roots the information to produce more nicotine. The higher levels of nicotine discourage the caterpillar.
Many plants depend on both physical and chemical defenses. A certain plant in China, for
instance, has prickly (多刺的) leaves, and each prickle contains poisonous venom (毒液) A single experience with this kind of plant will teach an animal to stay away from it in the future.
小题1:The holly plant has more spines on the lower leaves because most animals________.
A.are not tall enoughB.like the lower leaves only
C.are not clever enoughD.can get the lower leaves easily
小题2:To defend themselves, oak trees use________.
A.chemical meansB.physical means
C.bitter chemicalsD.sandy materials
小题3:How does tobacco protect itself against an attack from a caterpillar?
A.Its leaves fight against the attack by physical means.
B.Its roots send a messenger to discourage the caterpillar.
C.Its roots increase the production of nicotine when it is attacked.
D.Its leaves produce poisonous sand to drive the caterpillar away.
小题4:What would be the best title for this passage?
A.Plants and AnimalsB.How Plants Defend Themselves
C.Attacks and DefensesD.How Animals Eat Plant Leaves

题型:不详难度:| 查看答案
  A new eight-kilometer road is under construction that links the port area with motorway system. It is expected to carry 20,000 trucks and cars a day, which greatly reduces the overcrowded traffic in the center of the city. As part of the project, two four-kilometer road tunnels are being built below the central area of the city, one for traffic to the north and the other for the traffic to the south. The two tunnels are about 20 meters below the surface and are 12 meters wide, providing for two lanes of traffic in each direction. 

In the upper part of the tunnel two air-conditioning pipes remove the waste gas of trucks and cars and keep the quality of air inside the tunnel. The lighting is at the top of the tunnel, practically at its highest point. There will also be electric signs at frequent intervals. They show traffic conditions ahead and can be seen clearly by drivers. The wall is made up of four main elements, which include a waterproofing covering and, on the inside of the tunnel, a concrete lining.
Each tunnel is roughly round and the lower part of the tunnel is somewhat flat. The surface of the road lies on the base, which is made of concrete and steel. The drainage system, just below the road surface on one side, removes any extra liquid, particularly water. In the event of fire, the fire main, which is made of steel, pipes water to many fire hydrant stations at regular intervals along the length of the tunnel. The fire main is at the side of the tunnel and at the level of the road surface. Other systems in the tunnel will include emergency phones.
小题1:Each of the tunnels under construction is _____.
A.eight kilometers long and twenty meters wide
B.eight kilometers long and six meters wide
C.four kilometers long and twenty meters wide
D.four kilometers long and six meters wide
小题2:Which part of the tunnel in the diagram is used to pipe out extra water?
A. 1           B. 3            C. 5               D  6 
小题3:Driving in the tunnel, one can know the traffic conditions ahead through______.
A.the lightsB.the electric signs
C.the trucks and the carsD. the emergency phones
小题4:The passage is mainly about _____.
A.the construction of a roadB.the design of a road
C.the construction of two tunnelsD.the design of two tunnels

题型:不详难度:| 查看答案
The twentieth century saw greater changes than any century before: changes for the better,
changes for the worse; changes that brought a lot of benefits to human beings, changes that put man in danger. Many things caused the changes, but, in my opinion, the most important was the progress in science.
Scientific research in physics and biology has vastly broadened our views. It has given us a deeper knowledge of the structure of matter and of the universe; it has brought us a better understanding of the nature of life and of its continuous development. Technology m the application of science m has made big advances that have benefited us in nearly every part of life.
The continuation of such activities in the twenty-first century will result in even greater advantages to human beings: in pure science -- a wider and deeper knowledge in all fields of learning; in applied science -- a more reasonable sharing of material benefits, and better protection of the environment.
Sadly, however, there is another side to the picture. The creativity of science has been employed in doing damage to mankind.  The application of science and technology to the development and production of weapons of mass destruction has created a real danger to the continued existence of the human race on this planet. We have seen this happen in the case of nuclear weapons, Although their actual use has so far occurred only in the Second World War, the number of nuclear weapons that were produced and made ready for use was so large that if the weapons had actually been used, the result could have been the ruin of the human race, as well as of many kinds of animals.
William Shakespeare said, “The web of our life is of a mingled yarn (纱线), good and ill together.” The above brief review of the application of only one part of human activities----- science seems to prove what Shakespeare said. But does it have to be so? Must the ill always go together with the good? Are we biologically programmed for war?
小题1:Which of the following best shows the structure of the passage?
A.B.C.D.
小题2:From the fourth paragraph, we can infer that________.
A.a great many nuclear weapons were actually used for war
B.a large number of nuclear weapons should have been used for war
C.the author is doubtful about the ruin of human beings by nuclear weapons
D.the author is anxious about the huge number of nuclear weapons on the earth
小题3:The underlined word "mingled" in the last paragraph most probably means________.
A.simpleB.mixedC.sadD.happy
小题4:What do you think the author is most likely to suggest if he continues to write?
A.Further application of science to war.
B.More reading of William Shakespeare.
C.Proper use of science in the new century.
D.Effective ways to separate the good from the ill.

题型:不详难度:| 查看答案
Every year more people recognize that it is wrong to kill wildlife for “sport.” Progress in this direction is slow because shooting is not a sport for watching, and only those few who take part realize the cruelty and destruction.
The number of gunners, however, grows rapidly. Children too young to develop proper judgments through independent thought are led along way away by their gunning parents. They are subjected to advertisements of gun producers who describe shooting as good for their health and guncarrying as a way of putting redder blood in the veins (血管). They are persuaded by gunner magazines with stories honoring the chase and the kill. In school they view motion pictures which are supposedly meant to teach them how to deal with arms safely but which are actually designed to stimulate (刺激) a desire to own a gun. Wildlife is disappearing because of shooting and because of the loss of wildland habitat (栖息地). Habitat loss will continue with our increasing population, but can we slow the loss of wildlife caused by shooting? There doesn"t seem to be any chance if the serious condition of our birds is not improved.
Wildlife belongs to everyone and not to the gunners alone. Although most people do not shoot, they seem to forgive shooting for sport because they know little or nothing about it. The only answer, then, is to bring the truth about sport shooting to the great majority of people.
Now, it is time to realize that animals have the same right to life as we do and that there is nothing fair or right about a person with a gun shooting the harmless and beautiful creatures. The gunners like to describe what they do as character-building, but we know that to wound an animal and watch it go through the agony of dying can make nobody happy. If, as they would have you believe, gun-carrying and killing improve human-character, then perhaps we should encourage war.
小题1:According to the text, most people do not seem to be against hunting because___________.
A.they have little knowledge of itB.it helps to build human character
C.it is too costly to stop killing wildlifeD.they want to keep wildlife under control
小题2:The underlined word "agony" in the last paragraph probably means______________.
A.formB.ConditionC.painD.sadness
小题3:According to the text, the films children watch at school actually__________.
A.teach them how to deal with guns safely B.praise hunting as character-building
C.describe hunting as an exerciseD.encourage them to have guns of their own
小题4:It can be inferred from the text that the author seems to_____________.
A.blame the majority of peopleB.worry about the existence of wildlife
C.be in favour of warD.be in support of character-building

题型:不详难度:| 查看答案
最新试题
热门考点

超级试练试题库

© 2017-2019 超级试练试题库,All Rights Reserved.