东北大学23秋《大学英语（一）》在线平时作业2-答案.doc

??′ó?§ó￠ó?￡¨ò?￡??·?ú????ê±×÷òμ2-00001 ê??í×ü·?:100 μ?·?:100 ò??￠μ￥??ìa (12 30 μàê?ìa,12 60 ·?) 1.--Youre a very good student. --__________. 【A.项】No, not at all 【B.项】Yes, I am 【C.项】Just so and so 【D.项】Im glad to hear that ′e°?:D 2.The experiment involves _____ on some mice. 【A.项】to operating 【B.项】o