收入差距缩小,()人口比重上升。
A.中等收入
B.高等收入
C.极高收入
D.低等收入
参考答案:A
Some of the students are afraid of the teachers strict with students. [ ]
A. that is
B. who is
C. which are
D. who are
播讲目的是()与()的结合,它既应是播音员主观愿望的(),又应是及于受众,感染受众的()