学习化学知识的途径有（ ）
①听老师讲解；②动手实验；③小组讨论；④上网在线学习；⑤查阅资料
A．①
B．①②
C．①②⑤
D．①②③④⑤
答案：D
122. The homesick girl found that she missed her parents more than she had _____.
A．hoped
B．exposed
C．wanted
D．Expected
“开而弗达”体现了教学的( )
A．直观性原则
B．巩固性原则
C．启发性原则
D．循序渐进的原则
