_______ any reply, he had to send a second request.   [ ]

A. Not to receive  

B. Having not received

C. Not receiving  

D. Not having received

现有四组物质的溶液，仅用酚酞溶液及同组物质之间相互反应就能鉴别出来的是（　　）

A．NaOH、Ba（OH）₂、HCl

B．NaOH、HCl、NaCl

C．NaOH、HCl、HNO₃

D．H₂SO₄、NaCl、Na₂SO₄