四级考试阅读备考笔记（52）

　　27. Some scientists believe that a breakthrough in the use of solar energy depends on __________.

　　A) sufficient funding B) further experiments

　　C) advanced technology D) well-equipped laboratories

　　注：A选项讲到资金;C讲第三段，为窜段选项;D涉及句子次要成分的选项，涉及句子当中主要成分选项优选于涉及次要成分选项，次要成分包括：插入语，同位语。

　　The senior West German scientist in charge of the Communitys solar energy program, Mr. Joachim Gretz, told journalists that at present levels of research spending it was most unlikely that solar energy would provide as much as three percent of the Communitys energy requirements even after the year 2,000. But he said that with a modest increase in the present sums, devoted by the EEC to this work it was possible that the breakthrough could be achieved by the end of the next decade.

　　Questions 36 to 40 are based on the following passage:

　　36. The major problems with Americas railroad system in the mid 19th century lay in _________.

　　A) poor quality rails and unreliable stopping systems

　　B) lack of financial support for development

　　C) limited railroad lines

　　D) lack of a transcontinental railroad

　　37. The building of the first transcontinental system _________.

　　A) brought about a rapid growth of industry and farming in the west

　　B) attracted many visitors to the construction sites

　　C) attracted laborers from Europe

　　D) encouraged people to travel all over the country

　　38. The best title for this passage would be ________

　　A) Settlements Spread Westward

　　B) The Coast-to-Coast Railroad: A Vital Link

　　C) American Railroad History

　　D) The Importance of Railroads in the American Economy

　　39. The construction of the transcontinental railroad took _________.

　　A) 9 years B) 7 years

　　C) 4 years D) 3 years

　　40. What most likely made people think about a transcontinental railroad?

　　A) The possibility of government support for such a task.

　　B) The need to explore Utah.

　　C) The need to connect the east coast with the west.

　　D) The need to develop the railroad industry in the west.