15. Because of the Eskimos' constant exposure to cold weather, they have long recognized _____.
(A) the body's need for fat
(B) and body's need for fat
(C) how fat the body needs
(D) body's need the fat
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統計: A(146), B(6), C(63), D(12), E(0) #938385
統計: A(146), B(6), C(63), D(12), E(0) #938385