Excuse me,would you please turn down the TV,Brother?
Oh,sorry,Bob.I forgot that you_________ for your English test.( )
are studying
will study
study
were studying
下列离子方程式书写正确的是()
下列有关电解质及氧化还原反应的叙述,正确的是()
下列有关氯及其化合物的叙述错误的是()
下列说法错误的是()
硅及其化合物在材料领域中应用广泛,下列叙述正确的是()