黑龙江省哈尔滨工业大学附属中学2020-2021学年度高二英语下学期期末考试试题

黑龙江省哈尔滨工业大学附属中学2020-2021学年度高二英语 下学期期末考试试题 时间：120分钟 分值：150分 I卷 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） 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。在答题卡上 将最佳选项涂黑。 A Wouldn’t it be great if you could correct your eyesight, especially nearsightedness, and reduce your dependence on glasses and needn’t have eye surgery? The solution is called orthokeratology, or ortho-k (角膜塑形 镜). What is ortho-k? Orthokeratology (oilho-k) is the fitting of specially designed contact lenses (隐形眼镜) that you wear overnight. While you are asleep, the lenses gently reshape the front surface of your cornea（角膜）so you can see clearly the following day after you remove the lenses when you wake up. How Long does the ortho-k effect last? You should be able to see acceptably well without glasses or contact lenses for aday or two, sometimes longer. For best results, one should wear the ortho-k lenses every night. Who are good candidates for ortho-k? Most people with mild to average nearsightedness are good candidates for ortho-k. Because the corneal reshaping effect is temporary, little risk is involved ,and you can discontinue wearing the lenses at any time. Children and young adults who want to be glasses-free but are too young for eye surgery or are afraid of taking the surgery often are good candidates for ortho-k. People who participate in contact sports or work in dusty environments that can have problems for contact lens wear also can be good candidates. How much does ortho-k cost? Costs also can vary based on the region of the country and the type of practice where you have the procedure performed. Ortho-k prices in the