单项选择题

A．effects
B．affect
C．causes
D．influence

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单项选择题

A．effects
B．affect
C．causes
D．influence

单项选择题

A．reason
B．cause
C．course
D．coarse

单项选择题

A．around
B．about
C．on
D．of

单项选择题

A．found
B．invented
C．created
D．discovered

单项选择题

A．in short
B．in vain
C．in shape
D．in shore

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A．lead to
B．cause
C．produce
D．reach

单项选择题

A．or
B．but
C．so
D．and

单项选择题

A．section
B．number
C．part
D．quantity

单项选择题

A．effectiver
B．effective
C．more effective
D．most effective

单项选择题

A．below
B．after
C．before
D．behind

单项选择题

A．involved
B．involving
C．involve
D．to involve

单项选择题

A．in
B．between
C．among
D．middle

单项选择题

A．stand up
B．stand
C．swallow
D．take

单项选择题

A．about
B．with
C．into
D．toward

单项选择题

A．second larger
B．the second larger
C．the second largest
D．second largest

单项选择题

A．and
B．although
C．but
D．if

单项选择题

A．receiver
B．producer
C．taker
D．reliever

单项选择题

A．little
B．a little
C．a few
D．few

单项选择题

A．although
B．while
C．as
D．since

单项选择题

A．slip up
B．show up
C．slow down
D．slip down