问题
选择题
______ are very popular with people all over the world, but do you know who was it that invented ______ telephone?
A．The telephone; 不填
B．Telephone; a
C．The telephones; the
D．Telephones; the
答案
答案：D
第一空用telephones表示一类事物；发明物前一般要加定冠词the。