答案test1

s1：

1-8：f， f， ng， t， f， ng， t， ng

9-13：m， e， g， p， j

14：b

s2：

15-21： taste buds, baleen,forward, downward, fresh water dalphins, water, the lower

frequencies, bowhead, hunpback

22-26: sense of touch, freshwater dolphins,  airborne flying fish, clear open water,

sense of hearing

s3:

27~32:b c a e c d

33~39 pairs, words, sighted, sighted(用两次),deep, blind, similar

40: b

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