假设反应所产生的气体全部逸出，对反应后溶液中溶质的成分进行如下探究：

【实验用品】pH试纸、Zn片、氧化铜粉末、稀H₂SO₄、NaOH溶液、BaCl₂溶液．

【假设猜想】猜想一：Na₂SO₄

           猜想二：Na₂SO₄、NaHCO₃

           猜想三：Na₂SO₄、H₂SO₄

任务型阅读

I have a good friend. ①他叫汤姆。He is a nice boy, but he eats too much and he doesn’t like sports.

He has a big breakfast every morning. He has four eggs, some bread and milk. For lunch, he eats two hamburgers, ② lots of French fries and chicken. He has much cola, too. For dinner, he likes beef(牛肉) and salad. He likes ice cream, cola, hamburgers and dessert.

③ Too much food is not good for him. And he is not healthy.

判断下面的说法是否正确。

维也纳森林是指维也纳城市内被绿色所包围的地方。（    ）

有关巴西的说法，正确的是（　　）