First, the professor contends that the different structure of the head does not strengthen vision at all. this casts doubt on the reading passage's claim that it enhances the vision of the shark. according to the reading, since the eyes of the shark located at the end of the head laterally, it has a 360-degree field of view. however, it is possible when objects are really distinctive. moreover, rather, the site of the eyes might be a drawback. this is because the object become a blind spot, when it is directly in front of the shark.
Next, the professor insists that the outstaning ability to smell is given to normal sharks not only to hammerhead sharks. this counters the reading passage's assertion that the shape of the shark's head also gives it a better sense of smell than other shrks. just as the the eyes are spaced far apart, so are its nostrils. so the hammerhead shark can locate the prey faster than otehr sharks. however, according to the lecture, there is no scientific study that proves the author's contention.
Finally, the professor argues that it is wrong that the shape of the head makes it turn better. this refutes the reading passage's suggestion that it allow the hammerhead shark turn quichly. flat head acts like airplane's wings. the professor in the lecture says that the way it can move faster in the water is due to its flexible backbones, not due to the head.
Good: 24~30
점수: 24
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