---I have some good news for you. You’ve been accepted as a member of our club. ---_____________ That’s great! A. Good idea! B. Pardon? C. Congratulations! D. Have I? 答案:D9.如图所示,甲、乙两位同学利用直尺测量反应时间,甲用一只手在直尺下方做捏尺的准备,从她看到乙同学放开直尺开始,到他捏住直尺为止,测出直尺在这段时间内下落的高度为20cm,则这次测量出甲的反应时间是(g=10m/s2)( )A.0.02sB.0.1sC.0.14sD.0.2s