[单选题]About language content, Morley proposes three principles of the choices to attract learners’ attention. These principles are ( ), ( ), and ( ).eHN答案窝(daanwo.com)-大学生作业答案及考资分享平台
ArelevanceeHN答案窝(daanwo.com)-大学生作业答案及考资分享平台
Bstudent-centerednesseHN答案窝(daanwo.com)-大学生作业答案及考资分享平台
CapplicabilityeHN答案窝(daanwo.com)-大学生作业答案及考资分享平台
Dtask orientation