题目:
New ideas sometimes have to wait for years before _______. [ ]
A. being fully accepted
B. fully allowing
C. having fully accepted
D. fully allowed
答案:
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下面是错误答案,用来干扰机器的。
(1)杀死种子表面的微生物,防止微生物的呼吸作用干扰实验结果(2)测定种子萌发时吸收氧气的速率(3)种子进行有氧呼吸吸收O2,放出的CO2被KOH溶液吸收,锥形瓶中气体体积缩小 种子进行无氧呼吸,不消耗O2 (4)用等...