单项选择题

What is the main idea of the passage

A．An Energy-saving way to recycle bottles into drinking glasses.
B．How to make drinking glasses.
C．Recycling gives used bottles a new life.
D．Green Glass received worldwide patent rights.
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单项选择题
How long does it take to make out a glass according to Green Glass Company
A．Eight months.
B．Ten days.
C．Three hours.
D．Seven minutes.
单项选择题
He is always the first one ______ and the last ______.
A．having come; having left
B．coming; leaving
C．to come; to leave
D．came; left
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