[]辽宁省沈阳铁路实验中学2018-2019学年高一6月月考英语试题

沈阳铁路实验中学2018-2019学年度下学期阶段考试（6月）试题 高一英语 时间：100分钟 分数：120分 本试卷分第I卷（选择题）和第II卷（非选择题）两部分。考试结束，将本试卷和答题卡一并交回。 第Ⅰ卷 第一部分: 阅读理解 (共两节，满分35分) 第一节（共10小题；每小题2.5分，满分25分） A The idea for traffic lights began in the 1800s when a system was required to control the ever-increasing flow of horse-drawn traffic. In 1868, in London, a signal was installed (安装) at the crossing of George Street and Bridge Street, near Parliament. This provided walkers with a safe crossing. The system contained a semaphore（信号标）— a tall post with moveable arms. When the arms were positioned sideways it meant stop. After dark, a gas light was lit at the top. The green colored glass meant go, while red meant stop. At first, signals were controlled by hand, with officers deciding when the signals should be changed according to traffic flow. They blew a whistle to warn drivers that the signal was going to change. However, in 1869, a traffic signal exploded following a leak（泄露）in one of the ga