Which of the following is one of the .requirements of simultaneous interpretation？
A. Good memory.
B. Flexible mind.
C. More waiting time.
D. Pause between language conversions.
What is mentioned as a major characteristic of the one-room school system in the
A. Some children have to be left back.
B. Teachers are always busy.
C. Pupils have more freedom.
D. Learning is not limited to one grade level at a time.
请选择（7）处的最佳答案．
A. gathered
B. picked up
C. selected
D. chosen
A．orB．untilC．butD．then
A. or
B. until
C. but
D. then
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