单项选择题

Choose the correct letter, A, B, C or D.Write your answers in boxes 31-33 on your answer sheet. The combination of changes has made life:

A．easier
B．faster
C．slower
D．less sophisticated
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单项选择题
Nobel was an unsuccessful businessman.
A．真
B．假
C．Not Given
单项选择题
What does the author say about the incremental change of the last 100 years
A．It has become a hot scholastic discussion among environmentalists.
B．Its significance is often not noticed.
C．It has reshaped the natural environments we live in.
D．It benefited a much larger population than ever.
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