問題詳情
8. Many of these patent medicines contained alcohol or narcotics. Federal legislation inthe early 20th century required manufacturers to list the _____ and prohibited themfrom making false promises about their products.
(A) property
(B) sediments
(C) ingredients
(D) catalysts
參考答案
答案：C[無官方正解]
難度：簡單0.740741
統計：A(4),B(2),C(40),D(2),E(0)
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