安全过马路的表达 — 英语选择题
题目
Mike要过马路去上学。他站在zebra crossing前，traffic lights是红色的。按照交通规则，他应该做什么？选出正确的表达：A. Red light means go. Look right before crossing. B. Red light means stop. Look left and right before crossing. C. Green light means stop. Look left before crossing. D. Red light means stop. Look left and right before cross.