A：通入足量溴水中
B：与足量的溴反应
C：通入酸性KMnO4溶液
D：在催化剂存在的条件下与H2反应
— ________ is this notebook?
— It must be Anna's. Her name is on it.
–Sorry. I didn't hear. I _______ something else.
唐朝时，科举制度得到很大发展，其基本特征是( )
