[]辽宁省沈阳铁路实验中学2017-2018学年高一4月月考英语试题

沈阳铁路实验中学2017-2018学年度下学期月考试题 高一英语 时间：100分钟 分数：120分 第I卷（请将答案涂在答题卡上） 第一部分 阅读理解（共两节，满分40分） 第一节 （共15小题，每小题2分，满分30分） 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。 A New research has found that even if you give up smoking, the damage it has done to your genes (基因) will stay there for a much longer time. In the research, a team of US scientists studied the blood of 16,000 people. Among them, some were smokers, some used to smoke, and the rest were non-smokers. Scientists compared their genes and found that more than 7,000 genes of smokers had changed--a number that is one-third of known human genes. According to NBC News, both heart disease and cancer are caused by genetic changes. Some people may have had the changes when they were born, but most people get them in their day-to-day lives while doing things like smoking. When you stop smoking, a lot of these genes will return to normal within five years. This means your body is trying to heal (治