【单选题】Johan didn’t review(复习) the lesson, ___ he couldn’t answer the teacher’s question.
【单选题】Why does the professor mention the 'free-rider' problem?
A.
To review a concept he explained in class
B.
To give the student a plan to solve her problem
C.
To clarify the problem the student is facing
D.
To explain a benefit of working in groups
【单选题】19下列关于导游人员在旅游车上讲解的要领中,错误的是()
【单选题】He __________ to review our complaints procedures.
【单选题】在光照条件下,将等物质的量的甲烷和 Cl 2 充分反应,得到产物的物质的量最多的是
【单选题】下列关于导游人员在旅游车上讲解的要领中,错误的是()。
【单选题】在光照条件下,将等物质的量的甲烷和 Cl 2 充分反应,得到产物的物质的量最多的是
【单选题】(2013·湖南高考)He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.