题目

任务型阅读 Failure is what often happens. It is everywhere in our life. Students may fail in exams, scientists may fail in their research work, and players may fail in competitions. (1)Although failure happens to everyone, different people’s attitudes  towards（对于）failure are different..Some people don't think their failure is a very important thing at all. So they pay no attention to it. As a result, they will have the ______ failure later. Some people think themselves are fools and lose their hearts in everything after they get a failure. Then they     their time an常温下，下列各组离子在指定溶液中可能大量共存的是A．水电离出的c(OH-)=0.001mol/L的溶液：H+、Fe2+、Cl-、SO42-B．c(H+)=0.001mol/L的溶液：NH4+、Ba2+、A1O2-、Cl-C．pH=12的溶液：K+、Fe2+、ClO-、Br-D．与铝反应产生大量氢气的溶液：Na+、NH4+、Cl-、NO3-