We all know that we see with our––– and we hear with –––.A eyes ;noses B ears;eyes C eyes;ears D ears;mouth

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• 2.We hear _____ our ears and see _____ our eyes .用介词填空
• As we all know,it is ( 5 )for animals to be good at getting food.some like toget food withtheir right hands,but some like to get food with the left( 6).That's(7)the animals are left-handed or right-handed.5.A.lucky B.easy C.important D.interesting 6.A.hands B.ears C.eyes D.arms7.A.what B.why C.where D.how
• 1.We have a history lesson____________Firday afternoon.A.at B.in C.of D.on 2.__Please write down the telephone number.__Sorry,but I have no ______to write on.A.pen B.ink C.paper D.time3.__What's wrong with your son's____________?__He can't see things clearly.A.eyes B.ears C.nose D.head4.At the beginning of 2008,___________in the south of china experienced low nteacher,heavy snow and freezing rain.A.few cities B.wath C.many cities D.one city5.___What '
• 2.We hear _____ our ears and see _____ our eyes .
• We all know that we see with our––– and we hear with –––.A eyes ;noses B ears;eyes C eyes;ears D ears;mouth
• We all know that we see with our––– and we hear with –––.A eyes ;noses B ears;eyes C eyes;ears D ears;mouth
• 有一包白色粉末,可能由氯化银、碳酸钠、氢氧化镁、氯化钡、硫酸钠和硝酸钾中的某几种组成实验如下： （1）将少量粉末放入足量水中,搅拌、静置、过滤,得白色沉淀和无色滤液. （2）向所得沉淀中加入足量稀硝酸,沉淀全部溶解,但无气体产生. （3）向滤液中滴加硝酸银溶液,有白色沉淀生成,加入足量稀硝酸,沉淀不溶解.试根据以上现象推断该白色粉末中一定含有________；一定没有________；可能含有________（填化学式）附：请问（1）的化学方程式是什么? 请问（2）的化学方程式又是什么? 请问（3）的化学方程式又是什么? 对于一定没有的物质,理由是什么?
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