用be going to 填空。

1. I __________ (have) a meeting in the afternoon.

2. He __________ (go hiking) on his field trip next Sunday.

3. They __________ (watch) a football match tomorrow afternoon.

4. Lin Tao __________ (study) Japanese next term.

5. __________ you __________ (have) a dinner together?

6. __________ Han Mei __________ (do) her homework with the twins?

7. __________ Wang Feng and her mother __________ (sing) an English song in the coming party?

8. Where __________ they __________ (buy) some fruit?

9. When __________ the children __________ (meet) at the school gate?

10.What __________ you __________ (do) next Friday?

下列说法，正确的是[ ]

A．氯化钠晶体不导电的原因是氯化钠晶体中不存在离子

B．凡是氧化物，其组成中必定含有氧元素

C．NaHSO₄在水溶液中的电离出H⁺离子，所以它是一种酸

D．凡是生成盐和水的反应一定是中和反应