题目内容

参与尿素合成的氨基酸有______、______和谷氨酸,这些氨基酸可参与蛋白质的生物合成。

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Which was NOT originally one of the Nobel Prizes?

A. The medicine prize
B. The literature prize
C. The peace prize
D. The economics prize

61

A. though
B. whether
C. thus
D. how

62

A. them
B. him
C. us
D. you

半胱氨酸在代谢的过程中,可被氧化成______,它是______的组成成分,有助于促进脂类的消化吸收。

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