在广泛征求社会各界意见和建议、专家学者反复讨论和论证的基础上，2017年3月15日，第十二届全国人民代表大会第五次会议表决通过了《中华人民共和国民法总则》。回答小题。
A: Hey, John's birthday dinner is next week. Let's ____ about the food.
B: Sure. How ____burger, vegetable salad, and some fruit?
C:____ good. John likes hamburgers.
A: Oh, I ____ like salad.
C: But John likes salad, and it's his birthday.
A: Yes, you're right. What about the fruit?
B: I think John likes strawberries and apples.
C: OK. Let's have ____ and apples then.
下列哪一项不是哺乳动物的主要特征？（ ）
“对于区间（1，2）上的任意
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恒成立”的只有