单项选择题

According to the passage, people started to make glass ______.

A．4 500 years ago
B．nearly 4 500 years ago
C．less than 4 500 years ago
D．no less than 4 500 3,ears ago
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单项选择题
According to the passage the new telephone communication system ______.
A．has been put into actual use
B．was put into actual use in 1977
C．was put on experiment in 1977
D．had been repeatedly experimented on before 1977
单项选择题
If you want to go out for lunch on Sunday, you can call up the number ______.
A．2785161 or 2706030
B．2706030 or 3562367
C．7364431 or 2785161
D．3562367 or 2785161
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