单项选择题

Harry vacuum cleaners work entirely by______.

A．suffrage
B．suction
C．suede
D．subtlety

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单项选择题

Measuring skin fold thickness is considered to be an_____ method for estimating the amount of fat on one's body.

A．accessible
B．accountable
C．acceptable
D．adaptable

单项选择题

English primrose need to be grown in rich damp soil with plenty of ______or compost worked into it.

A．marijuana
B．manure
C．malt
D．mallet

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