45.Reptiles are better adapted to life on land than are amphibians. Which external characteristic would a reptile have to lose to make it roughly externally equivalent to an amphibian in terms of ability to tolerate dry land?
(A) scales;
(B) vertebral column;
(C) eyelids;
(D) limbs.
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統計: A(4), B(1), C(2), D(1), E(0) #3577774
統計: A(4), B(1), C(2), D(1), E(0) #3577774