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  3. The two hazards are asteroids and comets. If either travels through Earth’s atmo

The two hazards are asteroids and comets. If either travels through Earth’s atmo

游客2023-12-30  47
问题 The two hazards are asteroids and comets. If either travels through Earth’s atmosphere, it is called a meteor; if it lands on Earth’s surface, it is a meteorite.
选项 A、accident
B、superstition
C、muddle
D、danger
答案 D
解析 句意：有两种危险的事物——小行星和彗星，不管哪一个闯入地球的大气层，都称为流星，如果落在地面上，则成为陨石。hazard(危险)；danger(危险)；accident(意外)；superstition(迷信)；muddle(混乱)。所以选项D为答案。
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