题目

    Beijing is facing severe (严重的) traffic problems.Roads are wider now, but traffic jams (堵塞) often happen every day. Yuan, a Beijing taxi drivers said.     Beijing government is trying to do something to make traffic jams less. Before 2007, there were a few subway lines in Beijing. There was only line 1, line 2, line 13 and Batong Line. But now there is line 5, line 10, line 4, the airport fast -track and the Olympic branch line. And there will be 13 subway lines under construction in Beijing at the same time at the end of this year.     The opening of the new subwa如图是元素周期表中硫元素的部分信息及硫原子的结构示意图．下列说法不正确的是（ ）A．硫原子核内质子数为16B．硫的相对原子质量为32.06C．硫原子在化学反应中容易失去电子D．硫原子核外共有16个电子，最外层有6个电子