3 This is the first study to show how _____ to air pollution influences cognitive function in a national sample of older men and women.
(A) examination
(B) expiration
(C) exposure
(D) expansion
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統計: A(0), B(0), C(1), D(0), E(0) #3462242
統計: A(0), B(0), C(1), D(0), E(0) #3462242