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2015年全国职称英语考试于3月28日(9：00-11：00)举行。针对考后考生最关注的2015职称英语考试真题及答案解析问题，英语网在考后第一时间为您整理发布2015职称英语考试真题及答案解析：理工类。预祝各位考生顺利通过2015职称英语考试! 下面的短文后列出了7个句子，请根据短文的内容对每个句子作出判断：如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C.（第1622题，每题1分，共7分） ADHD Linked to Air Pollutants Children have an increased risk of attention problems,seen as early as grade school,if their moms inhaled（吸入）a certain type of air pollution when they were pregnant.Thats the finding of a new study.Released when things arent burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs：the burning of fossil fuels,wood and trash.Frederica Perera works at Columbia Universitys Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects childrens health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City.Because burning tobacco can spew（排放） PAHs into the air and lungs,Pereras team focused on nonsmokers.The researchers wanted to probe（探查） other sources of PAHs,ones that would have been hard for an individual to avoid. | 
