以下反应中,属于化合反应的是( )
A.双氧水二氧化锰水+氧气
B.氧化钙+水→氢氧化钙
C.石蜡+氧气点燃二氧化碳+水
D.碳酸钙+盐酸→氯化钙+水+二氧化碳
答案:B
It was the news________my brother had been admitted to the Football League________excited us. [ ]
A. that; which
B. whether; that
C. that; that
D. that; what
Windows98中在回收站中的文件不能被直接打开。