3. The author uses the example that some people seem to smile more often to illustrate _____.
(A) we learn our looks from people around us
(B) where we live has an influence on our ability to smile
(C) the amount of stress reduces when people smile more
(D) physical and social environment may affect how often people smile in certain areas
詳解 (共 1 筆)
未解鎖
【題組】3. The author u...