单项选择题

When did the weather recordkeeping begin

A．In 1990s.
B．In 1880s.
C．In 1994.
D．In 2002.
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单项选择题
We can learn from the passage that _______.
A．El Nino is the most destructive natural disaster.
B．NASA scientists are optimistic about the weather in 2005.
C．The energy imbalance of the earth will result in the warm temperature in 2005.
D．Oceans help store heat more efficiently than other things.
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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