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According to people who saw it, a large, bright object "exploded" over a. Siberian forest in 1908, making a very loud noise and
According to people who saw it, a large, bright object "exploded" over a. Siberian forest in 1908, making a very loud noise and
admin
2009-03-15
18
问题
According to people who saw it, a large, bright object "exploded" over a. Siberian forest in 1908, making a very loud noise and causing a spectacular "cloud of fire." Surprisingly, scientists did not visit the area until 1927. If anything, they were expecting to find a large hole and fragments(碎片)of rock that would indicate the impact of a meteor(流星). Instead, they found an area with fallen trees radiating(辐射)out from a central point, and largely destroyed by fire. Recent studies concluded that an object exploded about three miles above the ground. If this destruction was not caused by a meteor, then what did cause it? This is a tantalizing question. Some scientists think that a small comet(彗星)exploded just before colliding(碰撞) with the earth and ignited the forest. Recently, a few scientists have noticed that the area looks as if an atomic explosion took place, but they have no explanations of how or why. There is even a theory that a spaceship from another planet exploded while trying to land on the earth. To date, the evidence for all these theories is very mainly for educated guess.
选项
A、the "explosion" caused a loud sound and a big fire
B、the "explosion" caused much damage to the forest
C、scientists didn’t explore that area right after the explosion
D、people can’t make out the cause of the explosion
答案
C
解析
见原文第二行“Surprisingly…until 1927”,说明大爆炸之后科学家并没有立即对那一地区进行调查。
转载请注明原文地址:https://kaotiyun.com/show/a68d777K
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公共英语二级笔试题库公共英语(PETS)分类
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公共英语二级笔试
公共英语(PETS)
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