单项选择题

Over the past ten years, natural gas production has remained steady, but （）has risen steadily.

A．consumption
B．dissipation
C．disposal
D．expenditure

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单项选择题
The cut in her hand has healed completely, without leaving a （）

A．defect
B．wound
C．sign
D．scar
单项选择题
Don't let such a （）matter as this come between us so that we can concentrate on the major issue.

A．trivial
B．partial
C．slight
D．minimal
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