答案：A

　　After a railway cutting through this desert was finished，the Bonneville Salt Flats was used in 1910.The salt flats’ potential for racing was first recognized by W．D.Rishel，who convinced brave Teddy Tezlaff to attempt an automobile speed record on the flats.Tezlaff drove a Benz 141.73 miles per hour to set a remarkable world record.This place contributed a lot for land speed racing.In 1914 a speedway replaced the wagon trail.

　　本文介绍了美国的盐湖沙漠。

　　1．The Salt Lake Desert lies________.

　　A．in the east of Nevada

　　B．in the east of the Great Salt Lake

　　C．between Utah and the Great Salt Lake

　　D．in the southeast of Utah

　　解析：推理判断题。根据第一段Parallel to the west side of the Great Salt Lake...lies between the Great Salt Lake and the Nevada border可推断，答案为A项。

　　答案：A

　　4．Paragraph 3 was written mainly to show that________.

　　A．Robert Evans was the first one to die in the desert

　　B．traveling through this desert in the past was difficult

　　C．Jedebiah Smith led his team and explored the desert first

　　D．the Donner Party ate the dead to survive

　　解析：作者意图题。根据第三段The wagon trail showed a great deal of hardship and courage可推断，答案为B项。

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