单项选择题

Europe's earlier industrial growth was （）by the availability of key resources, abundant and cheap labor, coal, iron ore, etc.

A．constrained
B．remained
C．sustained
D．detained

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单项选择题
In November 1987 the government （）a public debate on the future direction of the official sports policy.

A．induced
B．initiated
C．promoted
D．designated
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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