单选题Whatstructureswereadoptedinseventeenthcenturycolonies?

单选题THE COYOTE 1 All North American canids have a doglike appearance characterized by a graceful body, long muzzle, erect ears, slender legs, and bushy tail. Most are social animals that travel and hunt in groups or pairs. After years of persecution by humans, the populations of most North American canids, especially wolves and foxes, have decreased greatly. The coyote, however, has thrived alongside humans, increasing in both numbers and range. 2 Its common name comes from coyotl, the term used by Mexico's Nahuatl Indians, and its scientific name, canis latrans, means "barking dog." The coyote's vocalizations are varied, but the most distinctive are given at dusk, dawn, or during the night and consist of a series of barks followed by a prolonged howl and ending with short, sharp yaps. This call keeps the band alert to the locations of its members. One voice usually prompts others to join in, resulting in the familiar chorus heard at night throughout the West. 3 The best runner among the canids, the coyote is able to leap fourteen feet and cruise normally at 25-30 miles per hour. It is a strong swimmer and does not hesitate to enter water after prey. In feeding, the coyote is an opportunist, eating rabbits, mice, ground squirrels, birds, snakes, insects, many kinds of fruit, and carrion--whatever is available. To catch larger prey, such as deer or antelope, the coyote may team up with one or two others, running in relays to tire prey or waiting in ambush while others chase prey toward it. Often a badger serves as involuntary supplier of smaller prey: while it digs for rodents at one end of their burrow, the coyote waits for any that may emerge from an escape hole at the other end. 4 Predators of the coyote once included the grizzly and black bears, the mountain lion, and the wolf, but their declining populations make them no longer a threat. Man is the major enemy, especially since coyote pelts have become increasingly valuable, yet the coyote population continues to grow, despite efforts at trapping, shooting, and poisoning the animals.

单选题Dubbing is used in filmmaking ____ a new sound track to a motion picture.

单选题Green Power You've insulated the attic, installed triple-glazed windows, and bought high-efficiency appliances. Can you make your home any more eco-friendly? For an increasing number of Americans, the answer is yes. You can let nature help cut your utility bill. It may be as simple as replacing outdoor lights with solar-powered fixtures or signing up for your utility's "green power" program. Thanks to rapid improving technology and government subsidies, thousands of Americans living in remote locations are finding it can be cheaper to use the sun and wind than fossil fuels. However, don't cut your ties to the local utility just yet.(A) [■] While renewable energy won't replace coal and natural gas soon (or ever, critics contend), consumers have more choices in their energy mix than ever before.(B) [■] And they're not at all whole-bran environmentalists: Roldan Montalvo runs a gas station here in Hebbronville, Texas.(C) [■] But when he wanted to bring electricity to his cabin eight miles out of town, he went solar. The reason was simple. The utility company wanted $100000 to extend its electric line to his cabin.(D) [■] Mr. Montalvo paid less than $8000 for his solar system, "It's all right so far," he says, looking up at the three solar panels that run a few lights, a fan, and a TV inside. "I can run power tools." Others, of course, take a more enthusiastic line. "There is a new focus on renewable." says Thomas White, chairman and chief executive of Enron Renewable Energy Corporation, which has completed the world's largest wind farm in Minnesota. "My feeling is that we are at the point in time where the personal computer was in the late 70s," adds Mac Moore, Director of Business Development for BP Solar, one of the largest manufacturers and marketers of solar electric systems in the world. "Over the next 10 years, if things go well, there's going to be a revolutionary change in the way that we obtain power." Wind power represents an even more compelling argument for remote homeowners. Turbines have become so much more efficient over the past decades that homeowners a quarter mile from a utility line may find it cheaper to put up a wind turbine than to pay the utility to extend its service. But for most consumers, barriers remain. For one thing, renewable energy systems are expensive to install and require more than a decade before consumers see a payback. Even a good deal on solar panels in a high-sun area would still cost a typical homeowner 30 cents a kilowatt hour, explains the CEO of Strategy Unlimited, a technology-research firm in Mountain View, Calif. That's far above the 6 to 15 cents that Americans typically pay their local utility, he adds. Small-scale wind turbines are much more competitive—anywhere from 8 to 15 cents a kilowatt-hour, says Mike Bergey, President of Bergey Windpower in Norman, Oklahoma. But they still require a $30000 to $35000 investment up front and it would take most homeowners 15 to 20 years before they'd see any payback. There are other drawbacks. Since these systems only produce energy intermittently, there's no guarantee homeowners can store enough energy to run their homes when the sun isn't shining or the wind isn't blowing. Then there's aesthetics. Will the neighbor accept those solar panels on your roof? Do you want a 100-foot-high wind turbine humming in your backyard like a muffled helicopter? That's why companies like Bergey Windpower are targeting rural residents in the United States—especially those in states such as California, where the government will pay up to half the cost of installing renewable-energy systems.

单选题In aeclipse of the Sun, the regions of umbra experience total eclipse and those of penumbra, partialeclipse.

单选题The Spanish (claiming) title to (all of) North America and established the (oldest city) in the United States, St. Augustine, Florida, (in) 1565.

单选题(The) federal system (of) government in Canada (is) similar to (it) of the United States.

单选题The First Arrival on the Moon On the 20th of July 1969, Neil Armstrong became the first man to walk on the Moon and it was the most monumental feat in modern history. His words "This is one small step for man, one giant leap for mankind" have probably become the most famous words of the Twentieth Century. 1) Skeptics, however, refuse to believe that man set foot on the Moon at all and argue that the film footage was the ultimate camera trick. In 1962 John F. Kennedy announced that Americans would put a man on the moon by the end of that decade. One year before, however, Russia had already launched rockets and sent astronauts into space. This meant that America was actually lagging behind Russia who took the lead in the so-called space race. 2) This space race, between the USSR and the United States embodied the principle of the Cold War, and for over a decade the two countries were engaged in heated competition. Both countries wanted to win to prove their scientific superiority and to show their military strength. The race began in 1957 when the Soviet Union launched the first artificial satellite, Sputnik. The American counteroffensive, the Apollo Program started in 1963 and was designed to land humans on the Moon and bring them back to Earth. During its nine years, six missions (Apollo 11, 12, 14, 15, 16, and 17) landed a total of twelve men on the moon. The first spacecraft to land a man on the moon. Apollo 11 spacecraft, was launched on July 16, 1969 atop the very powerful Saturn V rocket. It took three days to reach the Moon, but history was made when the Eagle, the Apollo 11 landing module, touched down and Neil Armstrong became the first human to walk on the Moon. 3) The argument that it was an elaborate trick to save face and win the space-race against the Russians lies mostly in the still photographs the astronauts brought back with them. All of the photographs were perfectly focused and none were blurred. Skeptics say that this would be impossible to achieve on the surface of the Moon especially since none of the cameras the astronauts used had any special adaptations to deal with the special conditions of the Moon"s atmosphere. Also it seemed that the film was unaffected by radiation, which under normal circumstances might have been damaged. Probably the most compelling argument is the fact that the astronauts were able to adjust their cameras and take pictures when in reality it should have been almost impossible to lift a finger. Moreover, in the pictures, there were shadows at the place where their only light source was the sun and there were not other powerful spotlights. Skeptics argue that the Apollo films are not genuine but fake. To back up their argument they suggested that instead of traveling to the Moon"s surface, astronauts stayed within the Earth"s magnetic field. The other side of this argument purported that because the astronauts passed through the belt at very rapid speed, they spent less than 15 minutes in the danger zone, which means that exposure over that amount of time would have been about I percent of a fatal radiation dose, not completely safe but survivable. Even though skeptics argue that the photographs could have been a forgery, these were not the only evidence the astronauts brought back with them. As proof of their trip to the Moon, the Apollo astronauts brought about 900 pounds of Moon rock to Earth. Scientists say that the Moon rocks provide absolute proof that the astronauts did land on the Moon because Moon rocks are unique and differ from Earth rocks in many respects. Also, common substances such as clay minerals, including limestone and glass, for example, that are ubiquitous on Earth are totalsly absent on the Moon and from the samples gathered by astronauts. 4) Today, many years later, an answer to this controversial argument might be just around the comer. European scientific astronomers have announced that they will use the latest, and most powerful, telescope ever made to search for equipment NASA astronauts left on the Moon. The Very Large Telescope (VLT) is capable of imaging a human hair from 16 kilometers away and is hoped to provide visual confirmation of one or more of the six lunar modules that landed on the Moon. Glossary footage: an amount or length of/film or videotape astronaut: a person trained to travel in a spacecraft Sputnik: any of a series of Soviet satellites sent into Earth orbit, especially the first, launched October 4, 1957. module: detachable compartment of a spacecraft viewfinder: a device on a camera that indicates, either optically or electronically, what will appear in the field of view of the lens

单选题For an advertisement to be effective, its production and placement must to be based on a knowledge of human nature and a skilled use of the media.

单选题Listening3"PhilosophyClass"

单选题The hermit crab, a crustacean that uses an empty shell as a portable refuge to coverits soft abdomen, changes shellsas grows.

单选题Directions: Complete the table by matching the phrases below. Select the appropriate phrases from the answer choices and match them to the problems and solutions to which they relate. TWO of the answer choices will NOT be used. This question is worth 4 points./r/n /r/n Solutions/r/n Problems/r/n /r/n /r/n ●/r/n ●/r/n /r/n /r/n ●/r/n ●/r/n /r/n /r/n ●/r/n ●/r/n /r/n /r/n ●/r/n /r/n Answer ChoicesA. Reduce the price of cars.B. Produce poisonous chemicals in combustion engines.C. Fit the car with a catalytic converter.D. Use cleaner fuels rather than petrol.E. Causes pollution by the brakes.F. Encourage alternative methods of transportation.G. Gives off small rubber particles by the tires.H. Raise taxes on petrol.I. Accelerates the growth of microorganisms within the soil.

单选题Democratic governments constantly face the problem of balancing ........ the individual with the needs of society.

单选题The Movie Crash One of the most controversial movies ever to receive an Oscar was the 2005 frontrunner Crash . Crash debuted in the fall of 2004 at the Toronto International Film Festival, yet was not accepted to run for the Oscars that year, as it had not yet hit the big screen. The movie"s commercial release occurred the following year in late spring, and its nomination for an Oscar immediately sparked a heated controversy in the world of movie critics. Many felt that a movie that does not score big with the audience should not even be considered for an award. The fact remains that Crash was a small-budget film shot mainly at the director"s house with borrowed equipment. In spite of these financial constraints, it made a triple return at the box-office. Nonetheless, it remains one of the financially least successful films of all times to ever win the Oscar for Best Picture. The only other movie to share its fate was The Last Emperor in 1998. Crash was director Paul Haggis" labor of love. The Canadian born moviemaker drew upon a personal life-experience when creating Crash . In 1991, Haggis"s vehicle was carjacked outside an L.A. video rental store, and this violent incident serves as the premise for the movie. The highly mediatized OJ Simpson trial, as well as the Rodney King riots of the nineties, made Haggis further wary of the racial tensions brewing in America. He teamed up with screenwriter Bobby Moresco to produce a movie that would reflect precisely these disconcerting facts in our everyday lives. Crash presents an unflinching look at escalating racial and social tensions in modern L.A. It reveals point blank the blinding prejudices people experience in their day-to-day lives, and the tragic effects these prejudices have upon them and the people around them. It also offers a subtle psychological portrayal of members of various social and racial classes. Crash follows the intertwined lives of several people who do not know each other, yet get to affect each other"s lives in unexpected and profound ways. There is the bigot white district attorney who tries to persuade voters that he is racially sensitive after being mobbed in open daylight after returning from a social function. There is also his prejudicial wife, who in the end comes to realize that her only real friend in an alien world is her Hispanic maid. Then there are two black partners in crime who openly profess that they would never steal from their own race, but who end up doing exactly that. Another black character, which works in the movie business, is subject to racial discrimination by the police when his wife is molested by a white cop for an alleged criminal offense. This injustice sends the man into a blind rage until the racial cop gets to save his wife during a very dangerous car accident. It turns out that the police officers" racial prejudice steins from the fact that some black office workers refused his father medical care. All these prejudices, ironies and coincidences ultimately shed light on the viewers" own hidden prejudices and false opinions. Crash is in the opinion of many a beautifully crafted ensemble piece. The acting and writing are both very strong, while the directorial line is lean, clean and taut. Some critics, on the other hand, gave the movie mixed reviews based on its lack of three-dimensional Asian characters. Minority publications especially found themselves offended by the reinforcement of certain racial stereotypes and failed to understand the movie"s subtle rebuttal of them. Several movie critics actually believed that the plot was rather clichéd, the dialogue melodramatic, and the characters mostly undeveloped. They were shocked to see the highly acclaimed movie Brokeback Mountain by Ang Lee lose out at the Oscar"s against the obvious underdog Crash . Yet prestigious publications gave Crash a two-thumbs up for its bold and dynamic portrayal of what America is all about. In their opinion, the Academy has finally been courageous enough to choose a more liberal and nonconformist movie as its Oscar winner. Glossary brewing: impending; imminent nonconformist: one who does not conform to conventional beliefs customs, or practices

单选题According to the passage, rock breaks down into clay under all of the following conditions EXCEPT when

单选题After the United States became independent, the cure of more fertile lands drew steadily New Englanders into the Ohio Valley and the British colony of Upper Canada.

单选题The exhibition of paintings organized in 1874 resulted in all of the following EXCEPT

单选题The word "these" in line 20 refers to

单选题The phrase "derived from" in line 19 is closest in meaning to

单选题Which of the following questions did the theory of spontaneous generation attempt to answer? (a) What is the origin of the living organisms are seen on some food? (b) How many types of organisms can be found on food? (c) What is the most effective way to prepare living organisms for microscopic examination? (d) How long can food stand before it putrefies?