問題詳情
【題組】15.____ is a characteristic we try to instill in our students. We encourage them to thinkpositively and to always look on the bright side.
(A) Elegance
(B) Diversity
(C) Optimism
(D) Subsistence
參考答案
答案：C
難度：簡單0.727273
統計：A(2),B(0),C(8),D(0),E(0)
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