题目内容
用浆液灌人岩体或土层的裂隙、孔隙，形成防水幕，以减小渗流量或降低扬压力的灌浆称为()．
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属于排除社会危害性的行为是()。
湿陷性黄土处理可采用()
种植乔木的分车绿带宽度不得小于1.5m;主干路上的分车绿带不宜小于()。
第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
The Silicon Valley of America is about seventy kilometers southeast of San Francisco. It is small in size. You will not find the 【B1】 Silicon Valley on any maps of California. But it is a very 【B2】 place. There are thousands of high-technology companies in Silicon Valley today.
The 【B3】 begins with Stanford University. 【B4】 the Second World War, Stanford University was having financial problems. It also 【B5】 several thousand hectares (公顷) that was not being 【B6】 . A professor at Stanford did his best to 【B7】 the problem. He learned that the university could not legally sell the land 【B8】 the Stanford family gave it to the university for free. However, the professor discovered there was 【B9】 to prevent the university from 【B10】 companies to pay the university to use the land. This idea 【B11】 the development of an area called Stanford Industrial Park. This business area was 【B12】 in 1954. Several leading companies moved their offices there. These 【B13】 businesses influenced other companies to move into or near the Stanford Industrial Park..
【B14】 the beginning of the computer age, the Silicon Valley is very famous in the word. In the early 1970s, a (an) 【B15】 named the area Silicon Valley in a series of stories for a publication called Electronic News. Young computer engineers with little 【B16】 started companies in this area. Many of these companies are now large international businesses. One 【B17】 is Apple Computers.
The Silicon Valley is a name that has become so popular today that it is often used to 【B18】 any area that is home to many electronics companies, such as Zhongguancun in China. 【B19】 the first and most important Silicon Valley can still be 【B20】 in California, America.
【B1】
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