Academic dishonesty is nothing new. As long as there have been homework assignments and tests, there have been cheaters. The way that cheating looks has changed over time though, particularly now that technology has made it easier than ever. A study by the Josephson Institute of Ethics interviewed 23,000 high school students and asked them a variety of questions about academic ethics. Of the teens surveyed, 51 percent said that they had knowingly cheated at some point on an exam but that they did not feel uneasy about the behaviour. A Common Sense Media survey found that 35 percent of students had cheated via smartphone, though the parents surveyed in that particular study did not believe their kids had ever cheated. In many cases, students did not realize that strategies like looking up answers on a smartphone were actually cheating at all.

        In today’s classrooms, students who cheat are rarely caught. There are no formulas written on the insides of hands or students looking across the aisle, or whispering answers to their classmates. Today’s students use smartphones, tablets or even in-class computers to aid their cheating attempts and leave no trace of their crimes. Since cheating through technology is not listed specifically as being against the rules in many school policies, students do not view the actions as unethical.

        The technology is being adopted so quickly that school districts cannot adequately keep up with cheating policies, or even awareness campaigns that alert students to the problem with using technology to find answers in a certain way. From a young age, students learn that answers exist conveniently at their fingertips through search engines and expert websites.

        Schools must develop anti-cheating policies that include technology and these policies must be updated consistently. Teachers must stay on guard when it comes to what their students are doing in classrooms and how technology could be playing a negative role in the learning process. Parents must also talk to their kids about the appropriate ways to find academic answers and alert them to unethical behaviours that may seem innocent in their own eyes.

解析：C。根据题干中的Josephson Institute of Ethics可定位至原文第一段第四句。该句提到了约瑟夫森伦理研究所的研究，接下来第五句便指出，在接受调查的青少年中，有51%的人表示，他们曾在考试中故意作弊，但他们并不会因为这种行为而感到不安。C项与此内容相符，其中的More than half of the interviewees是对原文第一段第五句中51 percent的同义转述，felt no sense of guilt对应该句中的did not feel uneasy，故正确答案为C。

错项排除：A项中的unaware与原文第一段第五句中的had knowingly cheated（故意作弊）相悖，故排除。B项表述在原文中无依据，故排除。原文中没有提到高中生作弊越来越难，故排除D项。