A:将铜丝插入稀硝酸中:Cu+4H++2NO3﹣═Cu2++2NO2↑+H2O
B:向Fe2(SO4)3溶液中加入过量铁粉:Fe3++Fe═2Fe2+
C:向NaAlO2溶液中通入过量CO2 制Al(OH)3:CO2+AlO2﹣+2H2O=Al(OH)3↓+HCO3﹣
D:用氨水吸收足量的SO2气体:2OH﹣+SO2=SO32﹣+H2O
完形填空 .从A、B、C、D四个选项中选出能填入空白处的最佳选项。This is a family photo.Five1are in the photo,they are in a2.The boy is Barry Hand.3is a student.His school is in Puer.His parents are 4.Barry 5two sisters.One is Marry6the other is Mona.They are also students.Barry7math,and he likes sports.He8basketball every day.His sisters like9.It is a great language(语言). The Hand family has a phone. Its10is 773—1068.