填空题

______ have increased greatly in the past century.

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Learning and research
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单项选择题
The middlebrows' attitudes were remarkable, in view of the fact that they______.
A．said they were broad- minded
B．were afraid of new tendencies
C．did such useful and progressive jobs
D．threatened modern artists and art form such as films
单项选择题
The spread of radio and cinema was accompanied by______.
A．less leading
B．more reading
C．less writing
D．more books
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