题目

阅读理解     Mr Jackson is having a meeting. He looks at the clock on the wall. It is 7:45. “The last bus left fifteen minutes ago,” he thinks. “I’ll have to stay in a hotel tonight.” Mr Jackson always drives home after work. He lives outside the city. There is something wrong with his car, so today he has to take a bus to his office. The meeting is over. When he goes out of the warm office, it begins to snow. He wants to have some warm food and soup first. Most restaurants are full of people and he has to go into a small one. The waiter shows(出示) him the menu(菜 设NA为阿伏加德罗常数的数值，下列说法不正确的是(    ) A．常温下，1 L pH＝1的硫酸溶液中含有的H＋为0.1NA B．常温下，14g C2H4和C3H6的混合气体中含有2NA个氢原子 C．2.3 g Na和足量的O2完全反应，在常温和燃烧时，转移电子数均为0.1NA D．1mol甲醇中含有C—H键的数目为4NA