生活在距今约一百七十万年的我国境内已知的最早人类是（ ）
A：元谋人
B：北京人
C：山顶洞人
D：蓝田人
亚洲和北美洲的分界线是（ ）
(____) No, I don't like winter.
(____) Which season do you like best, Lily?
(____) Winter. I can play with snow.
(____) So I like autumn best. It's always sunny and cool.
(____) What about you? Do you like winter, too?
(____) It's too cold.
在数轴上表示下列各数：0，－3，2，－ 14 ，5，并将上述各数的绝对值用“＜”号连接起来．
