A.developed
B.determined
C.discovered
D.delivered
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t
[单选题]Singing Alarms Could Save the Blind.If you cannot see,you may not be able t