单项选择题


A．valuable
B．appropriate
C．convenient
D．favorite
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单项选择题
People should ______ when deciding wheher to have a negative rich environment.
A．note their own reactions
B．move to a healthier area
C．observe domestic animals
D．watch how wealthy people behave
单项选择题
A．attainmentsB．feasibilityC．entertainmentsD．evolution
A．attainments
B．feasibility
C．entertainments
D．evolution
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