18、 It is quite necessary for a qualified teacher to have good manners and _____ knowledge. [ 1 分 ] A. extensive B. ineffective C. expensive D. intensive

18、 It is quite necessary for a qualified teacher to have good manners and _____ knowledge. [ 1 分 ]
A. extensive
B. ineffective
C. expensive
D. intensive

出自：乐山师范学院-高级英语

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