《中华民国宪法》使人民获得一些民主权利，从此，民主共和观念深入人心。[ ]
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Some people _____ playing football while others enjoy _____ football matches. [ ]
A. are fond of; watching
B. are fond; watching
C. are fond of; watched
D. be fond of; watch
下列程序段的输出结果是（）。
A．10 20
B．20 20
C．20 10
D．10 10
