37. It is not uncommon that farmers _____ crops, planting one crop one year and
another crop the next, to maximize product yield.
(A) abandon
(B) accompany
(C) administer
(D) alternate
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統計: A(5), B(2), C(7), D(19), E(0) #1021390
統計: A(5), B(2), C(7), D(19), E(0) #1021390