题目

阅读理解Facebookand other social media companies should make children aware that their onlineactivity is monitored by their parent or carer, under a code to improve childInternet safety in the UK.Turningoff the like function, and limiting data collection and geolocationtools on popular platforms such as Instagram and Facebook, are among a 16-pointlist of recommendations for age-appropriate design released by the InformationCommisioner's Office (ICO).Itsaid some techniques, which platforms employ to encourage users to use them,including Facebook likes, should not be used to try to keepunder若关于x的方程有两个相等的实数根，则锐角a为A. B. C. D.