阅读理解 A team of scientists proved that seals (海豹) had a very good sense of hearin
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阅读理解
A team of scientists proved that seals (海豹) had a very good sense ofhearing. These men trained blind seals to expect food when they heard sounds.The seals always began snapping (猛咬) when a strong signal wassounded.
It' wasproved that even a soft signal, a considerable distance away, could make thesesea animals respond. That should make the fisherman who makes much noise whileworking, or talks loudly, start thinking.
The same teamof scientists also trained seals to recognize different sounds. One bell-tonemeant food, two bell-tones meant no food. In the beginning, the seals mademistakes when the two-bell tones were sounded. They were, given a light tapafter each mistake. The seals were good learners. They easily learned to tellthe difference between the sounds.
1．Why was it necessary to use blind seals?Because they ________.
A. wereunable to use sight for clues (线索)
B. had betterhearing
C. werewaiting to be fed
D. were theonly animals to be found
2．To those seals strong signal meant ________.
A. snapping
B. nothing
C. food
D. a lighttap
3．The article doesn't say directly but suggeststhat fishermen usually think ________.
A. seals haveno sense of hearing
B. seals havegood sense of hearing
C. seals can only recognize bell sounds
D. sealscannot hear soft and long distant sounds
4．Light taps were given to those who ________.
A. expectedfood
B. came forfood
C. mademistakes
D. recognized the sounds
试题答案
答案：A;C;D;C
解析：| 1. 因为它们不能用眼睛看。 2. “Thesemen trained blind seals to expect food when they heard sounds.” 根据这句可知，对它们来说，声音就意味着食物。 3. 根据第二段可以进行推测，答案为D。 4. “Theywere, given a light tap after each mistake.” 这句为信息句。
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