单项选择题

Questions 11-14 are based on the following conversation. You now have 20 seconds to read the questions 11-14. What are the speakers mainly discussing

A．Astronauts’ clothing.
B．Products made in space.
C．Costume jewelry.
D．Problems in manufacturing.
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单项选择题
What is NOT mentioned as a part of the recycling process described in Paragraph 3
A．Breaking up Whatever is breakable.
B．Sharpening metal bars.
C．Separating light elements from the heavy ones.
D．Sorting out small pieces of metal.
单项选择题
The phrase be well on with ( Line 1, Para. 1 ) most probably means ______.
A．"have completed what was started"
B．"got ready to start"
C．"have achieved a great deal in"
D．"put an end to"
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