单项选择题

From the Paragraph 1, we can see that beginning in the 1970s ______.

A．income became more unequal
B．income became more equal
C．income became more unstable
D．income became more stable
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单项选择题
The writer went to Fuji to ______.
A．participate in a celebration
B．teach children there how to use the computer
C．make an adventure in the sea
D．spend the holiday on the seashore
单项选择题
According to the passage, who shall we fall back on for a better future for the environment
A．Our predecessors
B．Politicians
C．Computers
D．Young people
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