You can use MSN to _________ with each other online. [ ]
A.speak
B.talk
C.tell
D.say
答案:B
亚里士多德的“四因说”是如何对古希腊哲学关于本原问题的思考进行总结的?
成年人膳食胆固醇摄入量应低于()
A.800mg/d
B.700mg/d
C.600mg/d
D.500mg/d
E.300mg/d