下列电离方程式中，正确的是（　　）

A．CH₃COOH=CH₃COO^-+H⁺

B．NaOH=Na⁺+OH^-

C．KClO₃⇌K⁺+ClO₃^-

D．NaHCO₃=Na⁺+H⁺+CO₃^2-

翻译以下句子。

1. The boy delivers newspapers every morning.

_____________________________________________

2. Comrade Yang delivered the opening speech.

_____________________________________________

3. She went to a neighboring village to deliver a baby.

_____________________________________________

根据翻译,用deliver 完成句子。

4. Some new books _____    to the school.

    某些新书已经被送到学校.

5. The actor _____   his speech in a soft voice yesterday.

    昨天一位演员用他那柔和的声音做了演说.