影响学习动机的内部因素是（）。
A.成熟
B.家庭教育
C.社会舆论
D.教师的榜样作用
参考答案：A
– Do you know __________ the iPhone 4 yesterday?
–Sorry, I have no idea about it.
A．how much did he pay for
B．how much he paid for
C．he paid for how much
D．he paid how much for
引用散装劣质酒导致人体酒精中毒的成分主要是（）。
A.甲醇
B.超重
C.琥珀酸
D.酒石酸
E.乙醇
