咖啡因可发生紫脲酸胺反应，这是哪类结构与生物碱共有的反应（）
A.嘌呤
B.黄嘌呤
C.咪唑
D.嘧啶
E.鸟嘌呤
参考答案：B
— This doesn’t ______ me. Do you have a larger one?
— Sorry, but the color is different. Does it ______ you?
fit; fit B. suit; fit C. fit; suit D. suit; suit
典型心绞痛常伴有体温升高。
