Day 3-冲刺2021年中考英语完形填空提分必练之科普知识与现代技术

Day 3 A The largest animal that ever lived on the planet is the blue whale. An adult blue whale′s average length (平均长度) is 24 meters and it 1 over 100 tons. On land, an animal as 2 as the blue whale would almost certainly be crushed (被压坏) by its own weight. Usually, blue whales 3 winters in warm waters to give birth. A new-born baby whale can weigh as much as a big elephant. Mothers provide milk for their babies and 4 them for six or seven months. During summer, they travel to the Arctic seas to find food. The blue whale is also the loudest animal on the planet. They can make different 5 to communicate with each other. They can be 6 by other blue whales miles away. Blue whales 7 live for 80 to 90 years on average. Now they are endangered 8 humans killed them for their meat and oil. 9 , more and more people get to know the importance of saving these amazing animals. People are working hard to help them recover (恢复). It has been fo