单项选择题

Enormous sums of money have been spent on space exploration.

A．Much
B．Large
C．Small
D．Fixed
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单项选择题
This table is strong and durable.
A．long-lasting
B．extensive
C．far-reaching
D．eternal
单项选择题
About one million Americans are diagnosed annually with skin cancer.
A．every year
B．severely
C．actively
D．every month
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