某班历史兴趣学习小组在自主学习时搜集到以下几幅图片。符合这组图片主题的是（    ）

固体硝酸镁加热易分解，且产物较复杂．某学习小组以Mg（NO₃）₂为研究对象，加热分解，发现有红棕色气体产生．请推断下列产物的四种组合正确的是：（　　）

    How to spend a rainy day with your friends? You don't have to be bored on a rainy day. Here are some new ideas.

    ①____ You can tell stories from books or you can make up some new good stories.

   ②____ You can learn to cook. Ask your friends for help in the kitchen and make something delicious.

    ③____ You can write stories about yourself and read them to your friends, or you can write a story together.

    ④____ Play a game. Act as teachers, doctors, nurses or policemen. You can even dress up in your parent's clothes.

    ⑤____ Enjoy some music and dance around in the room. You can also sing while your friends are dancing.