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甲氨蝶呤的抗肿瘤作用为()

单选题
2021-07-17 17:42
A、阻止脱氧腺苷酸的合成
B、阻止嘌呤核苷酸的合成
C、阻止二氢叶酸还原成四氢叶酸
D、阻止肌苷酸转变为鸟苷酸
E、阻止肌苷酸转变为腺苷酸
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正确答案
C

试题解析

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