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。 ()
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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.
因为肽键-CO-NH-中的C-N键可以自由旋转，而使多肽链折叠出现多种构象。 ()
A. 正确
B. 错误
According to the passage (文章) ,when a man and a woman came to the restaurant, who paid the food？
A. The man always paid the food.
B. The woman always paid the food.
C. Sometimes the man paid the food, sometimes the woman paid the food.
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