“十六国”中，后赵的建立者石勒是()。
A. 鲜卑
B. 羌族
C. 匈奴
D. 羯人
Travelling by buses may be ______.
A. less comfortable than by underground trains
B. more comfortable than by trains
C. less comfortable than by other public transport
D. less comfortable than cars
What does the writer suggest about public transport？
A. It gives less mobility,
B. It only works locally.
C. It enables a variety of jobs,
D. It is becoming more popular,
1978年在我国出现的一场马克思主义思想解放运动是()。
A. 社会主义教育运动
B. 揭批“四人帮”运动
C. 关于真理标准的大讨论
D. 关于计划经济和市场经济的大讨论
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