問題詳情
5. The government-funded flu vaccination program aims to vaccinate those who are at great risk offlu and its serious ___________ to prevent the virus spreading.
(A)computations
(B) commutations
(D) complications
(C) competitions
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增