A.They cannot put their hands away from the grab bar.
B.They are forbidden to put their knees or feet out.
C.They should ask adults’ permission first to get on a ride.
D.Without adults’ okay sign, children shouldn’t get off a ride.
长理培训客户端 资讯,试题,视频一手掌握
去 App Store 免费下载 iOS 客户端