单项选择题

A．John came at l0:45.
B．John came at l0:50.
C．John came at 9:45.
D．John came at 11:20.
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单项选择题
Which of the following activities must consider climate as an important factor
A．Microelectronics.
B．Communications.
C．Banking.
D．Farmin
单项选择题
In industrialized countries, what businesses are scarcely affected by climate change
A．Water systems.
B．Energy and property.
C．Services.
D．Coastal activities.
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