单项选择题

The world temperature rise by 2030 is ______.

A．1 to 4 degrees C
B．3 degrees C
C．over half a degree C
D．1.3 degrees C
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单项选择题
We may infer from this passage that ______.
A．carbon dioxide and CFCs are equally harmful to the environment
B．global warming is a direct cause for natural disasters
C．the world temperature rise has been going up more quickly as time passes
D．people's living standard has been on the rise
单项选择题
Team-work played a very important ______ in their success.
A．effect
B．place
C．game
D．part
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