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【判断题】
嘌呤核苷酸和嘧啶核苷酸都是先合成碱基环，进一步再生成核苷酸。A.
正确
B.
错误
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【简答题】根据下面英文,选择答案 Confucius(孔子) is the greatest teacher in Chinese history. He was born on September 28, 551BC(公元前) in the Kingdom of Lu, in today’s Shandong Province. When he was young, he and his mother h...
【单选题】He went to the garden and saw ________ one-year-old baby on the grass.
A.
a
B.
an
C.
some
D.
/
【简答题】讨论:如何理解“资本来到世间,每个毛孔都滴着血和肮脏的东西。
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