题目

选择填空:仔细阅读各题,然后从A,B,C,D中选出一个最恰当的答案,填入题前括号内 ---I'm too ______. ---I think you should drink some water.               A.stressed out          B.thirsty          C.tired            D.hungry 答案:B(2013?通州区一模)下列物质中,能作磷肥的是(  )A.Ca(H2PO4)2B.NH4HCO3C.K2CO3D.CO(NH2)2
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