Many English words are _______ from Latin.
A. displayed
B. spread
C. lost
D. derived
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I feel _______ to say that I can not believe what he said.
A. wanted
B. observed
C. obliged
D. wandered
人类嘌呤核苷酸分解的终产物是
A. 尿素
B. 尿酸
C. 肌酸
D. 肌酐
E. NH3和CO2
临床上常用哪种药物治疗痛风症？
A. 5-氟尿嘧啶
B. 6-巯基嘌呤
C. 氨甲蝶呤
D. 氨基蝶呤
E. 别嘌呤醇
关于6-巯基嘌呤的叙述，错误的是
A. 抑制IMP生成GMP
B. 抑制IMP生成AMP
C. 抑制HGPRT活性，进而抑制次黄嘌呤生成IMP
D. 抑制鸟嘌呤生成GMP
E. 抑制腺苷生成AMP
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