The gradual____from autumn to winter creates a uniquely beautiful landscape.A. transmissionB. transactionC. transitionD. transformation

26. (5.0分) Which of the following statements are correct? A Different types of iro and steel are made by varying the carbon content. B The strength of steel is increased by decreasing the grain size with rapid cooling, or cold working. C Pozzolanic materials, such as PFA and CSF, deplete the lime in the hydrated cemnet. D Cement replacements are used to replace part of the cement in concrete.

阅读理解 　　Something big is happening to the human race-something that could be called The Great Transformation. 　　The Transformation consists of all the changes that are occurring in human life due to advancing technology. For thousands of years such progress occurred slowly. Now, everything is changing so fast that you may find yourself wondering where all this progress is really leading. 　　Nobody knows what all these changes really will mean in the long run. But this mysterious Transformation is the biggest story of all time. It is the story of the human race itself. 　　Some people worry about what will happen when the deposits of petroleum are gone, but already researchers are finding all kinds of new ways to obtain energy. Someday, solar power collected by satellites circling the earth or fission power manufactured by mankind may give us all the energy we need for an expanding civilization. Space exploration promises to open up many new territories for human settlement, as well as leading to the harvest of mineral resources like the asteroids. 　　Scientific research continues to open up previously undreamed of possibilities. Fifty years ago, few people could even imagine things like computers, lasers, and holography. Today, a host of newly emerging technologies such as artificial intelligence and genetic engineering are opening up all kinds of new paths for technologists. 　　Like it or not, our advancing technology has made us masters of the earth. We not only dominate all the other animals, but we are reshaping the world’s plant life and even its soil and rocks, its waters and surrounding air. Mountains are being dug up to provide minerals and stone for buildings. The very ground under our feet is washing ways as we chop down the forests, plow up the fields, and excavate foundations for our buildings. 　　Human junk is cluttering up not only the land but even the bottom of the sea. And so many chemicals are being released into the air by human activities that scientists worry that the entire globe may warm, causing the polar icecaps (冰冠) to melt and ocean waters to flood vast areas of the land. During the twentieth century, advancing technology has enabled man to reach thousands of feet into the ocean depths and to climb the highest mountain. Mount Everest, the highest mountain of all, resisted all climbers until the 1950s. Now man is reaching beyond Earth to the moon, Mars, and the stars. 　　No one knows what the Great Transformation means or where it will ultimately lead. But one thing is sure: Human life 50 years from now will be very different from what it is today. It’s also worth nothing that our wondrous technology is posing an increasingly insistent question: When we can do so many things, how can we possibly decide what we really should do? When humans were relatively powerless, they didn’t have to make the choices they have to make today. 　　Technology gives us the power to build a magnificent new civilization－if we can just agree on what we want it to be. But today, there is little global agreement on goals and how we should achieve them. So it remains to be seen what will happen as a result of our technology. Pessimists worry that we will use the technology eventually to blow ourselves up. But they have been saying that for decades, and so far we have escaped. Whether we will continue to do so remains unknown－but we can continue to hope. 1．The Great Transformation is caused by ________. [　　] A．artificial intelligence and genetic engineering B．the shortage, of natural resources C．the development of practical science D．unknown reasons 2．Today it is impossible for people to build a remarkable new civilization because ________. [　　] A．nobody is optimistic about the future B．human beings are unable to do so C．people disagree with each other in many ways D．people are not interested in it 3．The more chemicals we send into the air, the less land we will possibly have because ________. [　　] A．chemicals will wash away fields B．water levels will go up C．more and more land will be covered by ice D．none of the above 4．________ after all the petroleum is used up. [　　] A．We can depend on solar power or fission for energy B．We can ask God for help C．We will have no source to obtain energy D．We can bum wood

adj.可触摸的；有形的；实际的；真实的A. tangibleB. tycoonC. thrustD. taboo

写出下列缩写词的全称。【1】Jan. ______________【2】Mar. ______________【3】Jun. ______________【4】Feb. ______________【5】Apr. ______________

n.预防,警惕;预防措施vt.警惕;预先警告A. philanthropyB. perfection(●C. phraseD. precaution

The U.S. has changed from a farming economy to a knowledge and innovation-based economy, so it makes sense for the school year to change as well.问题What does the author think of the traditional school year in the U.S. today?(5.0)A Well-grounded.B Culture-bound.C Welcome.D Outdated.

n.预防,警惕;预防措施vt.警惕;预先警告A. perfectionB. precautionC. phraseD. philanthropy

1.(填空题，20分)Directions: Read the following passage with ten blanks. You are required to select one word for each blank from a list of choices given in the following word bank. You may not use any of the words in the bank more than once.poise afflicted embrace anonymous continuous noteworthy conscientiousconvert fragility conquer disastrous conflict conscious familiarity victimYou've stayed up all night making a PowerPoint presentation to a group of professors. Even though you are very_1_, you try hard to pretend to be confident on the day. However, something happens to make your mind go blank, and suddenly you lose your_2_: One of the professors shoots a glance at you, and whispers something to another professor beside him. All kinds of questions occupy your mind at the same time. Did I say something wrong? Am I making a bad impression? You are then_3_ by a wave of other, similar uncomfortable thoughts.If you have found yourself trapped in this_4_situation, you fit the typical model of a shy person. Shy people, as many experts define in their studies, usually fall_5_ to what is simply a careless glance or a meaningless gesture. Moreover, because of their low self-judgment rooted deeply in their mind, they often cannot_6_such advice as "try to worry less, and you'll perform better." But being shy doesn't necessarily mean being lacking in ability or competence. In fact, many very capable professionals are shy. One_7_distinction between a successful communicator and a shy sharer is that the latter often lacks self-confidence.Even though shy people are often involved in terrible situations due to their mental_8_, there's hope for them yet. According to experts, 40 percent of the shy population can_9_their shyness if just given the right amount of encouragement and support. Indeed, naturally shy people have gifts that they might not be_10_of. The most important thing to remember is that there is nothing inherently wrong with being shy, and that successful shy people don't change who they are, but the way they think and act.

China is ______ its efforts to integrate cutting-edge technologies such as cloud computing, big data and the Internet of Things into its transportation system.A. enlargingB. extendingC. intensifyingD. enriching