下列文学常识说法有误的一项是（    ）

在横线上写出正确的字。

Jiàn                  

飞____   ____全    实____   ____设

阅读理解

　　Jane went to Scotland(苏格兰)for her holiday. Two days ago, she sent a letter and a postcard to her family.

　　Jane said in her letter, “I visited a lot of places. How are you all? I miss you very much. I went to Edinburgh(爱丁堡)by train. I stayed there for three days and then I went to the mountains. I met a lot of young people there and now they are my friends. I also saw many famous lakes. I find that Scotland is more beautiful than England(英格兰). And the restaurant is very nice. I’m having a wonderful time here now. ”

猜想一：SO₂ $\stackrel{氧化}{\to }$ SO₃ $\stackrel{雨水}{\to }$ $H_{2}S{O}_4$

猜想二：SO₂ $\stackrel{雨水}{\to }$ $H_{2}S{O}_3$ $\stackrel{氧化}{\to }$ $H_{2}S{O}_4$

猜想三：以上两过程同时存在

有关上述猜想，收集一定量该地区刚下的雨水进行实验，下列判断中错误的是（    ）

下列离子组在指定溶液中能大量共存的是（    ）