I.阅读理解。（共15小题，计40分）
第一节（共15题，每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A、B、C、D）中选出最佳选项。
A
It should come as no surprise that kids are spending a lot of time in front of screens. According to a new study, teens aged from 13 to 18 spend an average of six and a half hour each day watching TV or using a digital device. Here are some truths and some myths(谬见) that the study showed:
