上海区徐汇区2016-2020年五年高考二模英语试题汇编 选词填空专题

上海区徐汇区 2016-2020年五年高考二模英语试题汇编-选词填空专题 2020年上海市徐汇区高考二模英语试题 Section B Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need. A. motive B. deliberately C. convinced D. injurious E. alerts F. desperately G. swept H. accounts I. unconscious J. preserving K. charging Why Humpback Whales (座头鲸) Protect Other Species from Killer Whales Robert Pitman, a marine ecologist, describes an encounter he witnessed in Antarctica in 2009. A group of killer whales were attacking a Weddell seal. The seal swam ___31___ toward a pair of humpbacks that had inserted themselves into the action. One of the humpbacks rolled over on its back, and the seal was ___32___ onto its chest, between the whale’s massive flippers (鳍). “That incident ___33___ me,” he says. “Those humpbacks were doing something we couldn’t explain.” Pitman started asking other researchers and whale watchers to send him similar ___34___. Soon he was reading through observations of 115 encounters between humpbacks and killer whales, recorded over 62 years. “There are some pretty astonishing videos of humpbacks ___35___ killer whales,” he says. In a 2016 article in Marine Mammal Science, a famous scientific journal, Pitman and his co-authors describe this behaviour and confirm that such acts of do-gooding are widespread. But knowing that something is happening and understanding why it’s happening are two different things. Pitman and his co-authors openly reflected on the meaning of these encounters. “Why,” they wrote, “would humpbacks ___36___ interfere with attacking killer whales, spending time and energy on a potentially ___37___ activity, especially when the killer whales… were attacking other species of prey?” Interestingly, humpbacks don’t just hit on killer-whale attacks. They race toward them like firefighters into burning buildings. And like those rescue workers, humpbacks don’t know who is in danger unt