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问题 综合

读图，回答下列问题。

（1）图中字母表示的地理含义是：A______、E______、G风化作用、L______、 F______、S固结成岩作

         用、W______、M______。

（2）试比较喷出岩与侵入岩的异同。 

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（3）结合本图，总结哪些地质作用可以形成哪些类型的山地？ 

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答案

（1）搬运作用；火山喷发；变质作用；沉积作用；侵蚀作用；重熔再生作用

（2）共同点：两者都是由岩浆直接冷凝形成的。不同点：喷出岩是岩浆喷出地表，在地面上冷凝而成的

         岩石；侵入岩是岩浆尚未到达地面就冷凝而成的岩石。喷出岩多具有气泡结构，比重较小；侵入岩

         结晶良好，比重较大。

（3）火山喷发可以形成火山；地壳的水平运动可以形成褶皱山（包括背斜山和向斜经外力作用形成的向

         斜山）；断层作用形成断块山。（点拨：解题的关键是掌握地壳物质循环的各个环节和地质作用对

         地形的影响。）

问答题 简答题

说明扳手的用途，材质要求及种类。
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For more than two centuries, American’s colleges and universities have been the backbone of the country’s progress. They have educated the technical, managerial, (1) and provided generation after generation of national leaders. Today educators from around the globe are turning to U. S. institutions of higher learning (2) . They are apt to find many reasons for the excellence of American universities, but (3) stand out as watersheds:
Education (4) : In 1862 Congress enacted the Land-Grant College Act, which essentially extended the opportunity of higher education (5) , including such disenfranchised groups as women and minorities. Each state was permitted to sell large tracts of (6) and use the proceeds to endow at least one public college.
(7) : Over the years, the decentralization and diversity of the America’s colleges and universities have promoted competition for students and resources. Competitive pressure first arose (8) . The academy’s impact really grew after World War II, when (9) commissioned by President Roosevelt argued that it was the federal government’s responsibility to (10) for basic research. Instead of being centralized in government laboratories, scientific research (11) in American universities and generated increasing investment. It also gave graduate students research opportunities and helped (12) far and wide, to the benefit of industry, medicine and society as a whole.
(13) : The end of the World War II saw passage of the Servicemen’s Readjustment Act of 1944. The law, which provided for (14) for returning veterans, made an already democratic higher-education system accessible in ways that were (15) in Europe, opening the doors of the best universities to men and women who had (16) of going to college.
(17) : The creation of federal loan guarantees and subsidy programs, as well as outright grants for college students brought (18) to higher education and further helped to democratize access. Since its founding (19) , the Federal Family Education Loan Program has funded more than 74 million student loans worth more than (20) .
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