据统计,2016年长春市接待旅游人数约67000000人次,67000000这个数用科学记数法表示为( ) A.67×106 B.6.7×105 C.6.7×107 D.6.7×108 答案:C.That was such an____question that it made me____,not knowing how to answer.A.embarrasing,embarrassedB.embarrassed, embarrassedC.embarrasing, embarrasingD.embarrassed,embarrasing