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I remained confused about the problem.

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预测发生一级反应的药物,其半衰期

A. 与初始浓度C0无关
B. 与t时反应浓度有关
C. 与反应常数k无关
D. 与初始浓度C0有关
E. 与反应时间有关

He went so far as to cheat openly on test.

可用作注射用包合材料

A. Β-环糊精
B. Α-环糊精
C. Γ-环糊精
D. 羟丙基-Β-环糊精
E. 乙基化-Β-环糊精

He would venture far out into places seldom visited by human beings.

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