He is a good science teacher but he often gives tedious lectures.A:great B:tire

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问题 He is a good science teacher but he often gives tedious lectures.

选项 A:great       
B:tiresome       
C:lazy       
D:tireless

答案B

解析本句意思:他是个不错的理科老师,但他的课经常令人厌倦。tedious意为“枯燥乏味的;冗长的”,与tiresome(烦人的,令人厌烦的)意思相近。great伟大的;lazy懒惰的;tireless精力充沛的。
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