15.
(A) all regions have experienced increased happiness
(B) not all developments are encouraging
(C) digital lifestyles have eliminated social pressure
(D) economic stability guarantees overall well-being
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統計: A(1), B(9), C(0), D(1), E(0) #3854452
統計: A(1), B(9), C(0), D(1), E(0) #3854452