题目

NA为阿伏加德罗常数，下列说法正确的是                                                              （    ）       A．标准状况下，22．4L苯中含有NA个苯分子       B．14g N2含有的核外电子总数为14NA        C．1 mol乙炔分子含3NA个碳碳叁键       D．23g金属钠与足量水反应时失去的电子数是NA 书面表达（15分）我们在学生中做了一个关于他们去哪里度假的调查，请你根据下表写一份调查报告，将调查结果表达完整，并阐述自己的观点。PlacesSeasideCountrysideBig citiesReasonssunshine, seafood, beach, relaxfresh air, beautiful view, friendly peoplesomething new, amusement park, shopping   Different people have different ideas about the places for vacation. _________________________________________________________________________________________________________________________________________________________________________________________________________