[填空题]The modem society has witnessed amazing development in astrology. In recent years scientific investigation of comets has (36) because of a growing interest in the origin of the sun and (37) . Scientists want to learn how comets are formed. They think that such information will be (38) to man’s understanding of the origin of the (39) 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, (40) or military victories.
The tails of comets provide (41) with spectacular sights at night. Comets tails are millions of kilometers long. The tail (42) reaches lengths of 250 kilometers and more.
There was a written (43) of comet as early as 1770 B.C. The Chinese kept careful record and so did the Babylonians. (44) .
The most famous comet in history is called Halley’s Comet. (45)

[简答题]As a scourge of the modern society, obesity has become the world’s biggest public-health issue today — the main cause of heart disease, which kills more people these days than AIDS, malaria, war. Since the World Health Organization labeled obesity an "epidemic" in 2000, reports on its fearful consequences have come thick and fast. Will public-health warnings, combined with media pressure, persuade people to get thinner, just as they finally put them off tobacco Possibly. In the rich world, sales of healthier foods are booming and new figures suggest that over the past year Americans got very slightly thinner for the first time in recorded history. But even if Americans are losing a few ounces, it will be many years before the country solves the health problems caused by half a century’s dining to excess. And, everywhere else in the world, people are still piling on the pounds. That’s why there is now a consensus among doctors that governments should do something to stop them.

[填空题]Modem technology has a big influence on our daily life. New devices are widely used today. For example, we have to (11) the Internet every day. It is becoming more and more (12) to nearly everybody. Now it’s time to think about how the Internet influences us, what (13) it has on our social behavior and what the future world will look like. The Internet has (14) changed our life; there is no doubt about that. I think that the Internet has changed our life in a (15) way.

[填空题]Modem history has witnessed China’s great suffering and the humiliation of Chinese people ______(由于帝国主义和殖民主义的侵略、瓜分)