填空题“apparent”改为“apparently”
单项选择题A.short distanceB.long distanceC.all kinds ofD.both A and B
填空题“an”改为“any”
填空题“being”改为“be”
单项选择题A.six, more than 100B.two, more than 200C.two, more than 100D.six, more than 200