China made its firm ____ to cut carbon emissions in 2009.A．commitmentB．projectC．_刷题宝

题干

China made its firm ____ to cut carbon emissions in 2009.

A．commitment	B．project
C．competition	D．comprehension

上一题下一题 0.64难度单项选择更新时间:2015-09-10 03:38:23

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