题目内容
快挥发性冷底子油一般涂刷在终凝前的水泥砂浆基层上，慢挥发的冷底子油一般涂刷在已硬化干燥的水泥砂浆基层上。
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阅读下面的短文，文章有5处空白，文章后面有6组文字，请根据文章的内容选择5组文字，将其分别放回文章原有位置，以恢复文章原貌。 Like fine food, good writing is something we approach with pleasure and enjoy from the first taste to the last. (46) . Quite the contrary, just as the cook has to undergo an intensive training, mastering the skills of his trade, the writer must sit at his desk and devote long hours to achieving a style in his writing, whatever its purpose school work, matters of business, or purely social communication. (47) . There are still some remote places in the world where you might find someone to do your business or social writing for you, for a fee. There are a few mangers who are lucky enough to have the service of that rare kind of secretary who can take care of all sorts of letter writing with no more than a quick note to work from. (48) . We have to write school papers, business papers or home papers. We are constantly called on to put words to paper. It would be difficult to count the number of such words, messages, letters, and reports put to the mails or delivered by hand, but the daily figure must be enormous. (49) . We want to arouse and hold the interest of readers. We want whatever we write to be read, from first word to last, not thrown into some "letters-to-be-read" file or into a wastepaper basket. (50) . A. But for most of us, if there is any writing to be done, we have to do it ourselves B. However, the managers may sometimes cause the writers a lot of trouble C. Any good writers, like good cooks, do not suddenly appear full-blown (成熟的) D. What is more, everyone who writes expects, or at least hopes, that his writing will be read E. This is the reason we bend our efforts toward learning and practicing the skills of interesting, effective writing F. You may be sure that the greater the effort, the more effective the writing, and the more rewarding
采用两种以上标号沥青熬制玛渧脂，应先放软化点高的沥青，再放软化点低的沥青。
下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。第一篇New Foods and the New World In the last 500 years, nothing about people—not their clothes, ideas, or languages—has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree(可可树) by South American Indians, The Spanish introduced it to the rest of the world during the 1500’s. And although it was very expensive, it quickly became fashionable. In London, shops where chocolate drinks were served became important meeting places. Some still exist today. The potato is also from the New World. Around 1600, the Spanish brought it from Peru to Europe, where it soon was widely grown. Ireland became so dependent on it that thousands of Irish people starved when the crop failed during the "Potato Famine (饥荒)" of 1845-1846, and thousands more were forced to leave their homeland and move to America. There are many other foods that have traveled from South America to the Old World. But some others went in the opposite direction. Brazil is now the world’s largest grower of coffee, and coffee is an important crop in Colombia and other South American countries. But it is native to Ethiopia, a country in Africa. It was first made into a drink by Arabs during the 1400’s. According to an Arabic legend, coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee bush. He tried one and experienced the "wide-awake" feeling that one-third of the world’s population now starts the day with. Which of the following statements is NOT true, according to the passage
以下是一个对数据文件进行缓冲输入操作的语句，在语句的下划线处，请填上适当的内容：DataInputStream din=new DataInputStream (new 【12】 (new FileInputStream("employee.dat")))；
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