―He’s never advised to achieve a balance between his job and hobbies, ________?

―_______. His parents and teachers often offer him advice to.

A．has he, Yes

B．is he, Yes

C．hasn’t he, No

D．isn’t he, No

盐酸滴入氢氧化钠溶液中，下列说法中错误的是（　　）

A．盐酸在水中解离出H⁺和Cl^-

B．氢氧化钠溶液中含有Na⁺、OH^-、H₂O分子

C．两种溶液混合反应时，实质是Na⁺与Cl^-结合生成氯化钠分子

D．两种溶液混合反应时，实质是H⁺与OH^-结合生成水分子