下列对家认识正确的有[ ]
①家是爱的港湾
②家是矛盾重重的地方
③家是我们物质生活的后盾
④家是感情的银行
A.①②③
B.①②④
C.②③④
D.①③④
答案:D
一Where is your friend?
一I _____ he's at home. [ ]
A. 1ook at
B. know
C. see
D. think
教学中教师应如何激发学生的学习动机?