原创试题专区
开通学校服务
[单选题]
________
A. The car keeps flashing its headlights.
B.The car slows down gradually to a halt.
C.They are alerted with a light and a sound.
D.They get a warning on their smart phone.
目前题库量最为丰富的在线做题神器，提供各类考试的在线模考每日一练、章节闯关、错题宝典、资料下载；快速锁定考点、专家精准答案解析。
手机版登录
