| far from, devote...to, be comprised of, depend on, deep down |
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| desire for; in the long term; in addition to; was inspired to; flexible; thanks to; capable |
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| until; be confirmed as; succeed to; failure; refer to; focus on; in search of; up to; risked; make an attempt |
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| in turn; in particular; set (sb/sth) apart from; compare with; make sense; concentrate on; pay off; be fond of; turn down; in response to; be made up of |
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| 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
Pitman started asking other researchers and whale watchers to send him similar
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
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 until they get there. That’s because the sound that
I wonder what humpback whales care deeply enough about to actively swim into battle with killer whales. When I ask Pitman, he tells me that, it still comes down to selfishly
| leave alone,achieve one’s goal,come true,face with,be fascinated by,fill in |
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5. Suppose you
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| get through, as well as, in shape, under pressure, make out, fall in love with, set up, in addition, now that, (be) absorbed in, due to, keep track of |
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| build，construct，establish，found，set up |
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| sweep away， at least， the number of， as many as， more than |
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