宰杀自己饲养的家畜吃肉的原始居民是
①元谋人②北京人③半坡居民④河姆渡居民[ ]
A．①②
B．③④
C．①③
D．②④
答案：B
推销道德的基本原则包括______
A．守信
B．细致
C．负责
D．公平
E．刻苦
This dictionary is pretty cheap. The price of it is _______ of the three. [ ]
A. very low
B. quite low
C. the lowest
D. much lower
