题目内容
（请给出正确答案）
[主观题]
Suppose we had a meal in a restaurant and the bill was 20 dollars, how much was the approp
riate tip we would give to the waiter？
A．15 cents
B．35 cents
C．1 dollars
D．3 dollars
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A．关系社会公众利益的保险险种
B．依法实行强制保险的险种
C．人寿保险的险种
D．新开发的人寿保险险种
