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

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