题目

根据下列句子及所给汉语注释，在横线上写出空缺处各单词的正确形式。（每空只填一词） 51. Are you _________(熟悉) with the song he is singing? 52. Try to ________(简化) your idea and tell me.     53. The_________ (接线员) has got me through to Beijing　　 54. Each of us has a ______________(计算) machine              55. My teeth are very____________(敏感的) to cold food.    答案：51. farmiliar  52.Simplify  53. operator    54.calculating    55. sensitive

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