单项选择题

A．if
B．though
C．as
D．unless
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单项选择题
A．failB．helpC．manageD．stop
A．fail
B．help
C．manage
D．stop
单项选择题
A．possibilitiesB．opportunitiesC．capacitiesD．responsibilities
A．possibilities
B．opportunities
C．capacities
D．responsibilities
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