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In the United States, the first day nursery was opened in 1854. Nurseries were established in various areas during the(1)half of the 19th century; most of(2)were charitable. Both in Europe and in the U. S., the day nursery movement received great(3)during the First World War, when(4)of manpower caused the industrial employment of unprecedented numbers of women. In some European countries nurseries were established(5)in munitions plants, under direct government sponsorship.(6)the number of nurseries in the U.S. also rose(7), this rise was accomplished without government aid of any kind. During the years following the First World War,(8)Federal State, and local governments gradually began to exercise a measure of control(9)the day nurseries, chiefly by(10)them.The(11)of the Second World War was quickly followed by an increase in the number of day nurseries in almost all countries, as women were(12)called up on to replace men in the factories. On this(13)the U.S. government immediately came to the support of the nursery schools,(14)$ 6,000,000 in July, 1942, for a nursery school program for the children of working mothers. Many States and local communities(15)this Federal aid. By the end of the war, in August, 1945, more than 100,000 children were being cared(16)in daycare centers receiving Federal(17). Soon afterward, the Federal government(18)cut clown its expenditures for this purpose and later(19)them, causing a sharp drop in the number of nursery schools in operation. However, the expectation that most employed mothers would leave their(20)at the end of the war was only partly fulfilled.

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Weathering is the breaking down of rocks, soils and minerals as well as artificial materials through contact with the Earth's atmosphere, biota and waters. Weathering occurs in situ, or "with no movement", and thus should not be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, snow, wind and gravity.Two important classifications of weathering processes exist - physical and chemical weathering. Mechanical or physical weathering involves the breakdown of rocks and soils through direct contact with atmospheric conditions, such as heat, water, ice and pressure. The second classification, chemical weathering, involves the direct effect of atmospheric chemicals or biologically produced chemicals(also known as biological weathering)in the breakdown of rocks, soils and minerals.The materials left over after the rock breaks down combined with organic material creates soil. The mineral content of the soil is determined by the parent material, thus a soil derived from a single rock type can often be deficient in one or more minerals for good fertility, while a soil weathered from a mix of rock types(as in glacial, aeolian or alluvial sediments)often makes more fertile soil. In addition many of Earth's landforms and landscapes are the result of weathering processes combined with erosion and re-deposition.Chemical weathering changes the composition of rocks, often transforming them when water interacts with minerals to create various chemical reactions. Chemical weathering is a gradual and ongoing process as the mineralogy of the rock adjusts to the near surface environment. New or secondary minerals develop from the original minerals of the rock. In this the processes of oxidation and hydrolysis are most important.The process of mountain block uplift is important in exposing new rock strata to the atmosphere and moisture, enabling important chemical weathering to occur; significant release occurs of Ca++ and other minerals into surface waters.Rainfall is acidic because atmospheric carbon dioxide dissolves in the rainwater producing weak carbonic acid. In unpolluted environments, the rainfall PH is around 5.6. Acid rain occurs when gases such as sulfur dioxide and nitrogen oxides are present in the atmosphere. These oxides react in the rain water to produce stronger acids and can lower the PH to 4.5 or even 3.0. Sulfur dioxide, SO2, comes from volcanic eruptions or from fossil fuels, can become sulfuric acid within rainwater, which can cause solution weathering to the rocks on which it falls.Some minerals, due to their natural solubility(e.g. evaporites), oxidation potential(iron-rich minerals, such as pyrite), or instability relative to surficial conditions(see Goldich dissolution series)will weather through dissolution naturally, even without acidic water.1. Which of the following is NOT true about weathering?2. Soil is created by( ).3. In chemical weathering,( ).4. Rainwater( ).5. Which of the following might serve as an appropriate title for this passage?

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When prehistoric man arrived in new parts of the world, something strange happened to the large animals: they suddenly became extinct. Smaller species survived. The large, slow-growing animals were easy game, and were quickly hunted to extinction. Now something similar could be happening in the oceans.That the seas are being overfished has been known for years. What researchers such as Ransom Myers and Boris Worm have shown is just how fast things are changing. They have looked at half a century of data from fisheries around the world. Their methods do not attempt to estimate the actual biomass(the amount of living biological matter )of fish species in particular parts of the ocean, but rather changes in that biomass over time. According to their latest paper published in Nature, the biomass of large predators(animals that kill and eat other animals)in a new fishery is reduced on average by 80% within 15 years of the start of exploitation. In some long-fished areas, it has halved again since then.Dr. Worm acknowledges that these figures are conservative. One reason for this is that fishing technology has improved. Today’s vessels can find their prey using satellites and sonar, which were not available 50 years ago. That means a higher proportion of what is in the sea is being caught, so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes. In the early days, too, longlines would have been more saturated with fish. Some individuals would therefore not have been caught, since no baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past. Furthermore, in the early days of longline fishing, a lot of fish were lost to sharks after they had been hooked. That is no longer a problem, because there are fewer sharks around now.Dr. Myers and Dr. Worm argue that their work gives a correct baseline, which future management efforts must take into account. They believe the date support an idea current among marine biologists, that of the “shifting baseline”. The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the past. That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels. Most fisheries are well below that, which is a bad way to be business.1. The writer mentions the extinction of large prehistoric animals to suggest that( ).2. It can be inferred form Dr. Myers and Dr. Worm’s paper that( ).3. Dr. Worm’s comment of “these figures are conservative”( Line 1, Paragraph 3)means( ).4. Dr. Myers and other researchers maintain that( ).5. The author seems to be mainly concerned with most fisheries’( ).

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Within that exclusive group of literary characters who have survived through the centuries—from Hamlet to Huckleberry Finn-few can rival the cultural impact of Sherlock Holmes. Since his first public appearance 20 years ago, the gentleman with the curved pipe and a taste for cocaine, the master of deductive reasoning and elaborate disguise, has left his mark everywhere—in crime literature, film and television, cartoons and comic books.At Holmes' side, of course, was his trusted friend Dr. Watson. Looming even larger, however, was another doctor, one whose medical practice was so slow it allowed him plenty of time to pursue his literary ambition. His name: Arthur Conan Doyle. As the creator of these fictional icons, Conan Doyle has himself become something of a cult figure, the object of countless critical studies, biographies and fan clubs.Conan Doyle was born in Edinburgh in 1859, in a respectable middle-class Catholic family. Still, it was far from an easy life. There was never enough money; they moved frequently in search of lower rents; and his father, a civil servant and illustrator was an alcoholic who had to be institutionalized. Yet the early letters he wrote to his mother are surprisingly optimistic, concerned mainly with food, clothes, allowances and school work. At 14 came his first unforgettable visit to London, including Madame Tussaud's, where he was "delighted with the room of Horrors, and the images of the murderers."A superb student, Conan Doyle went on to medical school, where he was attracted by Dr. Joseph Bell, a professor with an uncanny ability to diagnose patients even before they opened their mouths. For a time he worked as Bell's outpatient clerk and would watch, amazed, at how the location of a callus could reveal a man's profession, or how a quick look at a skin rash told Bell that the patient had once lived in Bermuda. In 1886, Conan Doyle outlined his first novel, A Study in Scarlet, which he described as "a simple tale of mystery to make a little extra money." Its main character, initially called Sherringford Hope and later called Sherlock Holmes, was based largely on Bell. But Holmes' first appearance went almost unnoticed, and the struggling doctor devoted nearly all of his spare time to writing long historical novels in the style of Sir Walter Scott—novels that he was convinced would make his reputation. It wasn't to be. In 1888, Holmes reappeared in A Scandal in Bohemia, a short story in Strand Magazine. And this time, its hero took an immediate hit and Conan Doyle's life would never be the same.1. Which of the following is NOT proper in describing Sherlock Holmes?2. Which of the following statements is NOT true about Conan Doyle and his family?3. Conan Doyle felt( )about his first visit to London.4. It can be inferred from the last paragraph that( ).5. Conan Doyle's short story "A Scandal in Bohemia" turned out to be( )at last.

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The Internet, E-commerce and globalization are making a new economic era possible. In the future, capitalist markets will largely be replaced by a new kind of economic system based on networked relationships, contractual arrangements and access rights.Has the quality of our lives at work, at home and in our communities increased in direct proportion to all the new Internet and business-to-business Internet services being introduced into our lives? I have asked this question of hundreds of CEOS and corporate executives in Europe and the United States. Surprisingly, virtually everyone has said, "No, quite contrary." The very people responsible for ushering in what some have called a "technological renaissance" say they are working longer hours, feel more stressed, are more impatient, and are even less civil in their dealings with colleagues and friends—not to mention strangers. And what's more revealing, they place much of the blame on the very same technologies they are so aggressively championing.The techno gurus(领袖)promised us that access would make life more convenient and give us more time. Instead, the very technological wonders that were supposed to liberate us have begun to enslave us in a web of connections from which there seems to be no easy escape.If an earlier generation was preoccupied with the quest to enclose a vast geographic frontier, the .com generation, it seems, is more caught up in the colonization of time. Every spare moment of our time is being filled with some form of commercial connection, making time itself the most scarce of all resources. Our e-mail, voice mail and cell phones, our 24-hour Interact news and entertainment all seize for our attention.And while we have created every kind of labor-and time-saving device to service our needs, we are beginning to feel like we have less time available to us than any other humans in history. That is because the great proliferation of labor-and-time-saving services only increases the diversity, pace and flow of commodified activity around us. For example, e-mail is a great convenience. However, we now find ourselves spending much of our day frantically responding to each other's electronic messages. The cell phone is a great time-saver, except now we are always potentially in reach of someone else who wants our attention.Social conservatives talk about the decline in civility and blame it on the loss of a moral compass and religious values. Has anyone bothered to ask whether the hyper speed culture is making all of us less patient and less willing to listen and defer, consider and reflect?Maybe we need to ask what kinds of connections really count and what types of access really matter in the e-economy era. If this new technology revolution is only about hyper efficiency, then we risk losing something even precious than time—our sense of what it means to be a caring human being.1. In corporate executives’ opinion, technology( ).2. Which of the following statements is NOT true according to the passage?3. The passage states that( )is the most valuable resource for the .com generation.4. It is implied in the Paragraph 6 that( ).5. Which of the following might be an appropriate title for the passage?

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