Amajorsource的精选

问题详情：根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。Amajorsourceofteenstressisschoolexams,andtestanxietyisnotuncommon.Whenyourecognizeyourteenisunderstress,howcan...