题目

根据对话内容，从方框中选择恰当的选项补全对话，其中有两项多余A: Hi. Mr. Hunt! B: I practiced tennis in the sports club.A: Oh? B: Twice a weekA: When do you usually practice it?B: On weekends. A: I usually go fishing.B: Who do you go fishing with?A: My friend, John.B: A: Sure. Next weekend you won't practice tennis?B: No, I won't. My coach (教练) asked us to relax next weekend.A: I see.A. How often do you practice it?B. That sounds interesting.C. Would you like some fish?D. What do you usually do on weekends?E What was the weather like?F. What did you do this mor亚硝酸钠（NaNO2）外观与食盐很相似，有咸味，误食易中毒。区别它们的一种方法是：隔 绝空气加热。没有明显变化的是食盐。能分解放出有刺激性气味气体的是亚硝酸钠。此气体可能是A．SO2B．NO2C．N2,D．NH3