单项选择题

According to the passage, Greenhouse gases do NOT include _______.

A．carbon dioxide
B．methane
C．nitrous oxide
D．fossil fuels
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单项选择题
The phrase ham it up in the second paragraph, last sentence, probably means _______.
A．act with exaggeration.
B．perform regularly.
C．perform alone.
D．overwhelmed.
单项选择题
According to the passage, children suffering from autism are unable to _______.
A．play musical instrument.
B．interact with other people.
C．recognize their parents.
D．be invited to birthday parties.
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