2. 外语
  3. The modem society has witnessed amazing development in astrology. In recent years scientific investigation of comets has 【B1】___

The modem society has witnessed amazing development in astrology. In recent years scientific investigation of comets has 【B1】___

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问题 The modem society has witnessed amazing development in astrology. In recent years scientific investigation of comets has 【B1】______ because of a growing interest in the origin of the sun and 【B2】______ . Scientists want to learn how comets are formed. They think that such information will be 【B3】______ to man’s understanding of the origin of the 【B4】______ system.
    The word "comet" comes from the Greek and means "hairy object". In history comets have a special place. People believed that they brought news of death, 【B5】______ or military victories.
    The tails of comets provide 【B6】______ with spectacular sights at night. Comets tails are millions of kilometers long. The tail 【B7】______ reaches lengths of 250 kilometers and more.
    There was a written 【B8】______ of comet as early as 1770 B.C. The Chinese kept careful record and so did the Babylonians. 【B9】______ .
    The most famous comet in history is called Halley’s Comet. 【B10】______ .It was named after Edmond Halley, an English scientist. 【B11】______ The comet appeared in 1758, as he predicted, 16 years after his death and will return again in 1986.
【B9】
选项
答案Aristotle was interested in comets. He thought that they began as burning gases in the earth’s atmosphere
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大学英语四级

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