单选题Broadsides could be published with little risk to colonial printers because they

单选题Green Power You've {{U}}insulated{{/U}} 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, {{U}}barriers{{/U}} 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 {{U}}aesthetics{{/U}}. 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 1974 the space probe Mariner 10 discovered ______ Mercury's surface is cratered by meteorite impacts.

单选题Listen to Track 50. A. To indicate that he is about to explain what type of drawing he wants B. To help students understand a term that may be confusing C. To indicate that he used the wrong word earlier D. To motivate the students to do better work

单选题Mitosis is the normal process (by which) a cell divides, (each) new cell (ending) up with (a) same number of chromosomes as the parent cell.

单选题Whatisthetalkmainlyabout?

单选题Why does the author mention a bell and a rattle in lines 4-5 ?

单选题Philosophy: Nihilism Professor: Good morning class. Has anybody ______ called Nihilism? Well, nihilism comes from a Latin word "nihil", which means nothing and can also be seen in the word ______ or bring to nothing. Student: Well, that ______ at all because it is basically the belief in nothing. Professor: I hope that this lecture will make some sense ______. It"s actually difficult to ______ of nihilism, but I"ll try. Political nihilism ______ that in order for any kind of future improvement all existing political, social, and religious beliefs must be eliminated. Ethical or moral nihilism rejects the possibility of ______. Instead, good and evil are anything but clear, and values that consider good and evil are the result of nothing more than social and emotional pressures. Existential nihilism is ______ of the belief today and it states the idea that life has no essential meaning or value. ______, nihilism is the belief that all values are ______ and that nothing can be known or communicated because there is simply no truth. ______, let"s talk about some of the people ______ nihilism. Student: Am I ______ if I say the philosopher Friedrich Nietzsche is associated with nihilism? Professor: Yes, you are ______. He is perhaps the most commonly associated with it. He felt that there is no ______ or structure in the world except what we give it. He wanted to break through all the ______ or faiths and firmly agreed with the idea that all ______ and that reason is powerless because there is no true world. Student: I"m trying to open up my mind to this way of thinking, but ______ everything I was ______. Do nihilists believe we all have a final purpose? Professor: I know this goes ______ what many people have learned throughout their lives, but I"m glad you"re ______ and understand this faith. To answer your question, no, nihilism rejects the belief ______. They feel this paints a pretty picture for society ______, and they totally reject the idea that the universe is ______ and that everything is structured toward an eventual conclusive revelation. Student: I think ______ the idea of nihilism, but what made it so popular and how come so little of it is heard of today? Professor: Well, early in the nineteenth century, Friedrich Jacoby used the word to negatively characterize human knowledge, but this didn"t ______. It really ______ when it appeared in 1862 in Ivan Turgenev"s novel Fathers and Sons . He used the word nihilism to ______ in the book who preached a belief of total negation. At the same time, nihilism became identified with a ______ movement in Russia ______ of the state, church, and family. By this time nihilists began to reject man"s spiritual essence ______. They denounced God and religious authority as opposing freedom. In addition to Nietzsche, the philosopher Max Stirner also accepted nihilism by attacking organized philosophy, ______ concepts. For him, achieving individual freedom was the only law and the state must be destroyed because it puts individual freedom ______. He didn"t stop with the state though. He also blamed others ______ limitations because their very existence is a barrier that compromises individual freedom. In other words, he claimed that, we are ______ each other. The movement eventually ______, destruction, and disorder. By the late 1870s, nihilists were thought to be ______ underground political groups supporting terrorism and assassination.

单选题Advertising's primary objective is to presell a product, that is, to convince consumers to purchase an item before they are actually see and inspect it.

单选题Which of the following can be in

单选题According to tile passage, scientists used isotopes from the water of the ice core to determine which of following?

单选题The author mentions all of the following as results of the shift to agricultural societies EXCEPT

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单选题Learning that takes place in infancy provides the __________ for the eventual transformation of a child into an adult.

单选题The author uses the word "Hence" in line 16 to indicate

单选题The author mentions the shoe industry in the second paragraph to provide an example of how

单选题The artist Romare Bcarden was ______whose yellows, deep blues, and fuchsias contrasted strongly with photographic gray in his bright collages. A. with a gift for color B. a gifted colorist C. a gift with colorful D. gifted with coloring

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单选题ecause of an illness is much cheaper than treatment, the local health clinic will be offering free flu vaccinations this weekend.

单选题The word "emphasize" in line 19 is closest in meaning to