题型:选择题 In his speech,he drew attention to the poor desert nation, _______about 36. million people are hungry.A.whichB.thereC.whereD.for which 查看答案
题型:选择题 下列实验数据,合理的是( )①用托盘天平称取12.6g CuO粉末;②用100mL量筒量取8.76mL稀H2SO4溶液;③普通温度计上显示的室温读数为25.68℃;④用pH试纸测得溶液的pH为3.12;⑤用10mL量筒量取某溶液,体积为8.2mL.A.①⑤B.①②③C.③④⑤D.②④ 查看答案