We______togotothesupermarketbecausewehadplentyoffood.
质量m=2kg的质点沿x轴运动，运动方程为x=0.5t2(SI)，从t=0s到t=3s过程中，外力对质点做功为（）
单个资本增大的途径是()
Peopletodayarehighlyconcernedaboutthequalityoftheairthey___(breath).
Decisiononwhetherthemessageisrightorwrongshouldatleastcomeafter_____whatthemessageis.
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