某实验小组对“载人宇宙飞船或潜水艇中一般都要安装盛放过氧化钠（Na₂O₂）颗粒的装置”感到非常好奇，设计实验进行探究。
【提出问题】过氧化钠与人呼出的哪种气体发生反应？
【查阅资料】① 人呼出的气体中主要成分是N₂、O₂、CO₂和水蒸气等。
②CO₂ + 2NaOH=Na₂CO₃ + H₂O。
【提出猜想】过氧化钠与人呼出的N₂或CO₂或水蒸气反应并生成氧气。 

从方框中选词并用其适当形式填空

describe; nobody; potato; reason; terrible

①What's your ____ for asking for so much money, dear?

② We know you had an unusual experience, but could you please ____ it more carefully?

③ —How's the food there in Europe during your vacation?

—It's really ____! They eat many things without cooking!

④ —Who helped you work out the problem?

—____! I made it myself after ten minutes' hard work.

⑤ —Do you like eating vegetables?

—Yes. I like ____ and tomatoes best.