图反映，物价上涨对低收入人群的家庭经济负担的影响比较大。因为，在一般条件下，表示生活必需品的价格和需求量的关系的曲线是
One of the main themes of the summit was “sustainable development”,or the question _________ we can continue developing the world without damaging the environment.
They wouldn’t let us through without examining our passports very carefully,_______?
_______ has finished the work ahead of time will be rewarded though we don’t know who it will be.
Many newspapers printed the governor’s statement _________ would support a tax cut.
Houston Rockets,__________ led by as many as 10 points in the first half,has dropped three straight after winning eight matches.
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