尿素的合成主要在肝脏的线粒体和胞液中进行，合成一分子尿素需消耗四分子ATP，而精氨酸代琥珀酸合成酶是尿素合成的关键酶。 ()
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磷酸戊糖途径是生物体内生成5-磷酸核糖的唯一代谢途径。 ()
A. 正确
B. 错误
糖的有氧氧化可以抑制糖的无氧酵解。有氧时，由于酵解产生的NADH和丙酮酸进入线粒体而产能，故糖的无氧酵解受抑制，这种现象称为巴斯德效应。 ()
A. 正确
B. 错误
Jo and Ella often stayed together.
A. Right.
B. Wrong.
C. Doesn't say.
Who often came to eat at the Happy Restaurant？
A. Husbands and wives.
B. men and their children.
C. men and their women friends.
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