40 Thanks to modern _______ , crops now grow abundantly in areas where once nothing but cacti and sagebrush could live.
(A) infection
(B) inflation
(C) irritation
(D) irrigation
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統計: A(37), B(36), C(46), D(177), E(0) #2988669
統計: A(37), B(36), C(46), D(177), E(0) #2988669