Day 8-2021年中考英语考前抢分练之完形填空专练（杭州专用）

Day 8 A Every time I travel around the mountains in Yukon Territory by car, I often notice a road sign that says, "A fed bear is a dead bear." 1 , I did not get it. Why is a fed bear a dead one? According to a friend, many travelers used to throw their food from their cars for the bears. 2 the bears turned to the roadside for food and finally lost their ability to take care of themselves. When winter came, fewer travelers took trips to the mountains, which 3 less food for the bears, some of them died of hunger. So the Canadian government 4 warning signs along the road, advising people not to feed the bears. This reminded me 5 a scientific experiment. Some white mice were divided into two groups. One group 6 their days only eating and sleeping. 7 , fed only with half the amount of food they need, had to search for food. Half a year later, scientists found that the mice that had to search for their own food were 8 while the fully fed ones we