【正确答案】 D

【答案解析】[听力原文] Teachers say the digital age has had a good influence—and a not-so-good influence—on this generation of American teenagers. More than 2, 000 middle and high school teachers took an online survey. Researchers also spoke with teachers in focus groups. Three-quarters of the teachers said the Internet and digital search tools have had a positive effect on their students' research habits and skills. But 87 percent agreed that these technologies are creating an 'easily distracted generation with short attention spans. ' And 64 percent said the technologies 'do more to distract students than to help them academically. ' Many students think 'doing research' now means just doing a quick search on Google. Judy Buchanan is deputy director of the National Writing Project and a co-author of the report. She says, 'Teachers really like these tools because they are ways to make some of learning exciting and engaging. Young people love these tools, which can help them become creators of content, and not just sort of consumers. ' But one problem the survey found is that many students are lacking in digital literacy. In other words, they trust too much of the information they find on the Internet. Judy Buchanan says these students have not developed the skills they need to judge the quality of online information. Another problem is blamed on something that might not seem like a problem at all:being able to quickly find information online. Teachers say the result is a reduction of the desire and ability of their students to work hard to find answers. They say students are overly dependent on search engines and do not make enough use of printed books or research librarians. Many teachers are also concerned that the Internet makes it easy for students to copy work done by others instead of using their own abilities. How do three-quarters of the teachers think about the Internet and digital search tools? 短文开头部分提到，接受在线调查的教师中有四分之三的教师认为互联网和数字搜索工具对学生的“研究习惯和技巧”起到了积极的作用，因此选项D“提高学生的研究习惯与技巧”与短文内容相符。