（C）
A new study by the British government has discovered the mental health of the country's teenage girls has become Worse.
The survey, which included 30,000 14-year-old students in 2005 and 2014. showed 37 percent of girls with psychological stress, up from 34 percent in 2005. British boys' stress level %%as actually seen to fall over the same time period, from 17 percent to 15 percent.
The report's authors pointed out the "advent of the social media age" could be a major contributing factor for increased stress among teenage British girls.
"The adolescent years are a time of rapid physical, cognitive (认知的) and emotional development," Pam Ramsden, a lecturer in psychology at the University of Bradford in the United Kingdom, wrote in a recent blog post. "Teenagers interact with people in order to learn how to become competent (有能力的) adults. In the past, they would engage with parents, teachers and other adults in their community as well as extended family members and friends. Now we can also add social media to that list of social and emotional development."
Throughout adolescence, girls and boys develop characteristics like confidence and self-control. Since teenage brains have not completely developed, teens don't have the cognitive awareness and impulse (冲动) control to keep from posting inappropriate content. Furthermore, this content can easily be spread far and wide with disastrous influences.
Social media can also feed into girls' insecurities about their appearance, Ramsden said. These sites are often filled with images of people with body type unattainable to the normal person. However, these images and the messages tied to them gradually become societal standards.
【语篇导读】本文是一篇科普文。主要介绍网络社交媒体对青少年女生的负面影响。
29. The statistics in the second paragraph show that .
30. Contrary to traditional ways of interaction, social media .
31. The underlined word "advent" in Paragraph 3 can be replaced by .
根据文章第二段，可以判断：A “British boys' stress level 。。。。 from 17 percent to 15 percent.”可知英国男孩有精神压力的比例的百分点在下降。 所以A错
“B” The survey, which included 30,000 14-year-old students” 文中记录调研对象为30，000名学生，但并没说明数量相对于英国女生总人数的多少。所以B错
C 文中只记录了英国男孩患病比例在下降，并没说男孩数量的多少。 C错。 D由文中“up from 34 percent in 2005. ”可知女孩所占比例在上升，由“。。。fall over the same time period, from 17 percent to 15 percent.”，可知男孩数量在下降。 所以D正确。
事实细节题，直接信息理解、是非判断。确定题目关键词，在文章中找到对应部分，回到题目逐一对照。
把握不住细节信息。
抓住题目中interaction一词，可知答案最有可能文章倒数第三段中找到。A 由文章倒数第二段可知，在青春期，男孩和女孩应该增强自信和自我控制力，并未说是由 social media 所能影响的。所以A错。 从全文可知social media增加了学生对外貌的不自信，促使她们追求超乎正常人的体型等，对她们造成了精神压力，产生消极影响。 B对。 C由文中“teens don't have the cognitive awareness and impulse (冲动)control ”可知，处于青春期的学生并不具有自我意识的能力，与文中不符。C错。D“However, these images and the messages tied to them gradually become societal standards.
”可知女孩们是成为了社会的标准，而不是迎合。D错。联系文章主旨，所以选择。
事实细节题，直接信息理解、是非判断、年代数字、例证题。确定题目关键词，在文章中找到对应部分，回到题目逐一对照。
把握不住细节信息。
综合全文可知，该章科普文主要讲述大众传媒对青春期少年的影响。由倒数第三段中的大众传媒出现前后青春期少年成长经历的不同，可知文中"advent of the social media age"划线单词意思应为“到来”的意思。A对。
信息理解、联系上下文确定正确词义。
无法联系上下文理解词义。