单项选择题


A．instrument
B．appliance
C．apparatus
D．equipment
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单项选择题
A．how oftenB．how muchC．how manyD．how
A．how often
B．how much
C．how many
D．how
单项选择题
A．propagandaB．transactionsC．proceduresD．transformation
A．propaganda
B．transactions
C．procedures
D．transformation
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