Dolphins and whales are not only among (39)animals in our oceans, these creatures also have rare intelligence. The divers and scientists (40)spend a lot of time among whales often wonder what is going on in the brains of the sea’s Largest inhabitants. We know that they have the biggest brains in the animal kingdom. (41)intelligence is part of the reason they have proven to be such successful animals. But what are they doing with all that brain power? This question came (42)the mind of American scientist Nan Hauser during a very close encounter with a humpback whale in 2017. Humpback whales can (43)as much as forty tons. They usually (44)scientists and divers alone, but on this occasion one whale took an active interest in Miss Hauser. “I was prepared to Lose my Life,” she shared later. “I thought the whale was going to hit me and break my bones.” It was only when Hauser saw the tail of a shark that she realized that the whale was trying to (45)her life. The encounter was recorded on an underwater camera, and Later became a (46)video. This was not the only example of whales interfering to save the (47)of other species. What motivates a whale to save a human is unknown. It could be the result of their protective instincts. Scientists say that whales have a very complicated brain. Some dolphins can recognise (48)in the mirror. Another example of the whale’s intelligence is its ability to communicate and navigate underwater. 39 A the biggest B biggest C bigger D bigger than 40 A which B who C when D what 41 A Theirs B Them c Themselves D Their 42 A on B for c to D by 43 A weigh B weight c weighing D weights 44 A Leaf B leave c leaving D has Left 45 A save B safe c saving D saved 46 A virus B wire c viral D wireless 47 A lives B living c lively D livelihood 48 A them B theirs c their D themselves

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