考试时间：2010.09.10

　　考试地点：成都 川大

　　ISSUE：120 "So much is new and complex today that looking back for an understanding of the past provides little guidance for living in the present."

　　218 "In order for any work of art—whether film, literature, sculpture, or a song—to have merit, it must be understandable to most people."

　　ARGUMENT：47

　　Scientists studying historical weather patterns have discovered that in the mid-sixth century, Earth suddenly became significantly cooler. Although few historical records survive from that time, some accounts found both in Asia and Europe mention a dimming of the sun and extremely cold temperatures. Either a huge volcanic eruption or a large meteorite colliding with Earth could have created a large dust cloud throughout Earth&aposs atmosphere that would have been capable of blocking enough sunlight to lower global temperatures significantly. A large meteorite collision, however, would probably create a sudden bright flash of light, and no extant historical records of the time mention such a flash. Some surviving Asian historical records of the time, however, mention a loud boom that would be consistent with a volcanic eruption. Therore, the cooling was probably caused by a volcanic eruption.

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