146. In the 1940's and 1950's, biochemists strived to learn what each of the vitamins

問題詳情

146. In the 1940's and 1950's, biochemists strived to learn what each of the vitamins was essential forhealth.

答案：A
難度：困難0.294118
統計：A(5),B(2),C(2),D(1),E(0)

【用戶】陳麗玲

【年級】高二上

【評論內容】這題不是 During嗎

【年級】國二上

【評論內容】請斟酌並附上選項A、B、C、D，以便作答。