A:乙烯
B:苯
C:乙酸
D:乙醇
亚里士多德认为,物质受形式的支配,只有属于精神世界的形式,才赋予物质以确定性和现实性。这种观点( )
一艘轮船行驶在B处同时测得小岛A,C的方向分别为北偏西30°和西南方向,则∠ABC的度数是( )
— How many ________ were on the bus when the accident happened?
— About forty. Seven of them were kids.