问题:
[单选题]About language content, Morley proposes three principles of the choices to attract learners’ attention. These principles are ( ), ( ), and ( ).saf答案窝(daanwo.com)-大学作业答案分享平台
Arelevancesaf答案窝(daanwo.com)-大学作业答案分享平台
Bstudent-centerednesssaf答案窝(daanwo.com)-大学作业答案分享平台
Capplicabilitysaf答案窝(daanwo.com)-大学作业答案分享平台
Dtask orientation