题目

Traffic rules are very important. They help to keep people safe on the___________ . When we are___________ on the street, we must obey(遵守） the traffic rules. We can ___________ the street only when we see the green ‘walk’ sign. Before we walk ___________ the street, we must stop and look ___________ ways—look left, look right and look left again. When we ride a bike, we must not ride ___________ the road. We should ___________ cross the red traffic lights. Don’t look around ___________ talk when we ride___________ our friends. When we drive cars, we shouldn’t drive too fast. We我国民族组成最复杂、少数民族个数最多的省份是（ ）A.云南 B.广西C.福建 D.山东