知行练习题Set1+Set2

1. What is the conversation mainly about?A. The student’s research on virtual learning environmentsB. Some requirements of a course the student is enrolled inC. Why the university limits the number …

真题Set1L2

1. What is the lecture mainly about? A. Reasons why exoplanets tend to have retrograde orbits B. Different methods used to discover giant gas exoplanets C. A new discovery about …

真题Set3L2

1. What is the lecture mainly about? A. Reasons for the collapse of an ancient society in the Sahara  B. Methods of discovering ancient water sources in the Sahara  C. …

真题Set3L1

1.What is the discussion mainly about? A. A scientific debate over the effectiveness of marine protected areas B. Why open populations of fish are relatively common C. A key consideration …

真题Set1C1

1.Why does the man go to see the woman? A. To show her an outline of an assignment B. To conduct an interview C. To discuss an article he was …