单选题The first fiction writer in the United States to achieve international fame A B C was Washington Irving, who wrote many stories, included " Rip Van Winkle" and D "The Legend of Sleepy Hollow".

单选题In films, optical printing (can) be combined with blue-screen photography (for) produce(such) special effects as characters seeming (to fly) through the air.

单选题According to the passage, the Mississippi River was

单选题A musical organ can have pipes of two kinds: flue pipes that work like a flute and reed pipes that operate on same principle as a clarinet.

单选题Poems vary in (length) (from) brief lyric poems to (narrative. or epic poems, which can be as broad in scope (than) a novel. A. length B. from C. narrative D. than

单选题1 An important element of drama is that it is a presentation by performers in front of an audience--for example, a ceremony conducted by civic leaders before members of a community. Another aspect is costumes, such as those worn by tribal chiefs who impersonate animals or gods. Moreover, drama involves storytelling--recitation of myths or legends, teaching lessons through stories--to a group of listeners. Sometimes the storyteller imitates the characters in the story by changing his or her voice for different characters.

单选题Kola Hole The Kola Hole, now stretching more than seven and a half miles into the ground, is the deepest hole on earth. It surpasses even the natural abysses of the ocean floor. Through layer upon layer of rock, the hole penetrates ever farther into the earth"s geologic past. Passing through rock that formed when the first multi-celled organisms were roaming the earth, it now reaches a time when the atmosphere as we know had not yet evolved. All told, 1.4 billion years of history line the walls of the Kola Hole, a record in stone that has served up a wealth of surprises to Russian geologists. But none so strange as the incident that was reported in an American tabloid not long ago. It began, according to one member of the drill crew, when they noticed their drill bit was heating up rapidly. As the crew pulled it up to see what the matter was, out of the hole flew a hideous, gargoyle-like beast in a cloud of bituminous smoke. This inky creature squawked, shrieked, and fluttered out of sight. Afterwards, the crew lowered a sensitive microphone down the hole. "We could hardly believe our ears", one scientist reportedly said. "We heard a human voice, screaming in pain. Even though one voice was discernible, we could hear thousands, perhaps; millions in the background". Could it be that they were hearing the cries of legions of wicked souls? Had the Kola Hole pierced the house of Satan himself? Readers of the tabloid story were left to draw their own conclusions. However, the tabloid, as evidence of its story"s veracity , pointed out that under the ruling of Russian government, all gods and demons had been suppressed for seventy years. Thus, if a Russian crewmember had reported the incident, the tabloid concluded that it mu crewmember had because nobody could have possibly made up such a tale. A Norwegian scientist set out to prove the contrary. He was convinced the entire Kola Hole demon story was nothing but the figment of an overheated imagination. The smoke plume and extreme temperature could be traced back to the natural occurrences deep within the bowels of the earth. The scientist was convinced that inside the rocky mantle of the Earth temperatures were reaching boiling points, or else such natural phenomena as volcanism and mineral springs could not be explained. To make his point, the scientist went about spreading even more dark satanic rumors about the Kola Hole. He published a report full of misleading information, which, however, could easily be detected as false by an inquisitive and rational mind. He even had one of his collaborators agree to sign the paper as a reference. The Norwegian scientist proved his point that people were so fascinated by paranormal activities that they were willing to ignore the obvious fact. Nobody bothered to verify the accuracy of the information, and the story would have made the rounds had the scientist not put an end to it and revealed his hoax. Glossary Kola Hole: the world"s deepest excavation, the 12.3 kilometer hole in the former Soviet Union abyss: an immeasurably deep chasm, depth, or void bituminous: resembling or containing bitumen (any of various naturally occurring impure mixtures of hydrocarbons) Communism: a form of socialism that abolishes private ownership

单选题The word "spawn" in line 1 is closest in meaning to

单选题1 Laughter is a key to a good life and good health: it can diminish feelings of tension, anger, and sadness. Just as exercise conditions our bodies, frequent laughter can train our bodies to be healthier. When laughter is a regular experience, it lowers blood pressure and boosts brain chemicals that fight pain. It can also reduce stress hormones that increase vulnerability to illness, as well as increase hormones that have been shown to help produce restful sleep. Laughter is like an instant vacation in the way it changes our psychobiology. 2 To make laughter a regular part of your life, try keeping a humor journal in which you record some of the amusing things that happen to you. Another technique is to create a weekly fun time to look forward to, such as watching a comedy video or having a dinner with friends that features joke telling. Another sure source of laughter is spending time with children and animals.

单选题Whatisthetalkmainlyabout?A.Jazzmusicians.B.Theoriginsofjazz.C.Themusicstyleofjazz.D.Thefeaturesofjazz.

单选题Why does the author mention syllables pronounced with rising and falling inflections in lines 7-8 ?

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单选题Inflation, interest rates, and overall economic active can be governed by the United States Federal Reserve’s decision to adjust the supply of money to the economy.

单选题There is ample evidence of that about 700 million years ago, glaciers reached well into what are now tropical regions.

单选题Human Migration Human migration: the term is vague. What people usually think of is the permanent movement of people from one home to another. More broadly, though, migration means all the ways—from the seasonal drift of agricultural workers within a country to the relocation of refugees from one country to another. Migration is big, dangerous, and compelling. It is 60 million Europeans leaving home from the 16th to the 20th century. It is some 15 million Hindus, Sikhs, and Muslims swept up in a {{U}}tumultuous{{/U}} shuffle of citizens between India and Pakistan after the partition of the subcontinent in 1947. Migration is the dynamic undertow of population change: everyone's solution, everyone's conflict. As the century turns, migration, with its inevitable economic and political {{U}}turmoil{{/U}}, has been called "one of the greatest challenges of the coming century". But it is much more than that. It is, as has always been, the great adventure of human life. Migration helped create humans, drove us to conquer the planet, shaped our societies, and promises to reshape {{U}}them{{/U}} again. "You have a history book written in your genes," said Spencer Wells. The book he's trying to read goes back to long before even the first word was written, and it is a story of migration. Wells, a blond geneticist at Stanford University, spent the summer of 1998 exploring remote parts of Transcaucasia and Central Asia with three colleagues in a Land Rover, looking for drops of blood. In the blood, donated by the people he met, he will search for the story that genetic markers can tell of the long paths human life has taken across the Earth. A. [■] But however the paths are traced, the basic story is simple: people have been moving since they were people. B. [■] If early humans hadn't moved and {{U}}intermingled{{/U}} as much as they did, they probably would have continued to evolve into different species. C. [■] From beginnings in Africa, most researchers agree, groups of hunter-gatherers spread out, driven to the ends of the Earth. D. [■] To demographer Kingsley Davis, two things made migration happen. First, human beings, with their tools and language, could adapt to different conditions without having to wait for evolution to make them suitable for a new niche. Second, as populations grew, cultures began to differ, and inequalities developed between groups. The first factor gave us the keys to the door of any room on the planet; the other gave us reasons to use them. Over the centuries, as agriculture spread across the planet, people moved toward places where metal was found and worked to centers of commerce that then became cities. Those places were, in turn, invaded and overrun by people in later generations called {{U}}barbarians{{/U}}. In between, these storm surges were steadier but similarly profound tides in which people moved out to colonize or were captured and brought in as slaves. For a while the population of Athens, that city of legendary enlightenment was as much as 35 percent slaves. "What strikes me is how important migration is as a cause and effect in great world events. " Mark Miller, co-author of The Age of Migration and a professor of political science at the University of Delaware, told me recently. It is difficult to think of any great events that did not involve migration. Religions {{U}}spawned{{/U}} pilgrims or settlers; wars drove refugees before them and made new land available for the conquerors; political upheavals displaced thousands or millions; economic innovations drew workers and entrepreneurs like magnets; environmental disasters like famine or disease pushed their bedraggled survivors anywhere they could replant hope. "It's part of our nature, this movement," Miller said, "It's just a fact of the human condition. "

单选题Telescope are frequently used in astronomy to collect light from a celestial object, bring the light into focus, and producing a magnified image.

单选题The particles comprising a given cloud are continually changing, as new ones are added A B while others are taking away by moving air. C D

单选题.In the nineteenth century a number of Native American tribe, such as the Comanche, lived a nomadic existence hunting buffalo.

单选题Columbia University's School of Public Health is _________ a handful of schools of public health in the United States.

单选题Free land, cheaply transportation, and powerfully persuasive railroad advertising all helped flood the western part of the United States with farmersin the nineteenth century.