問題詳情
61.Lung cancer, like some other cancers, often doesn’t produce ________ until it is too late and has spread beyond the chest to the brain, liver or bones.
(A) trails
(B) therapies
(C) symptoms
(D) symbols
參考答案
答案：C
難度：簡單0.75
統計：A(0),B(1),C(3),D(0),E(0)