一（共15小题；每小题2分，满分30分）
阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡将该项涂黑。
A
Do you ever do homework while listening to music, or watch TV while texting friend? It may seem like an obvious question since most of us multitask(做多个任务) all the time.
But according to a recent study published in the journal PLOS ONE, using a number of media devices(媒体设备) at the same time could be changing our brains.
