【C3】A．puzzlesB．mysteriesC．marvelsD．studies

【C20】A．study wellB．studying wellC．study goodD．studying good

How did the researchers carry out their study？A．They studied the findings of several previ

材料题请点击右侧查看材料问题 查看材料A.puzzlesB.problem

【C3】A．performedB．behavedC．workedD．studied

If a study focuses on Shakespearean language, it is a______ study.A．diachronicB．synchronic

normative study和descriptive study的关系是（)。A.can implies oughtB.规范从事实中来C.事实从