题干
以“尊王攘夷”为号召，扩充疆域，后来成为春秋时期第一位霸主的是（ ）
A：齐桓公
B：晋文公
C：楚庄王
D：秦孝公
答案(点此获取答案解析）
A
It is noon now. The sun is high in the sky. It is very hot. Look at the tree. The shadow is short. 
It is evening now. The sun goes down in the west(西方). Look at the tree, the shadow is long again. 
It is night now. The moon is high in the sky. There are some stars in the sky too. 