葡萄酒的保质期是多久?
参考答案:甜性酒为2-4年;干性酒通常为6-10年。
单词拼写(共10小题,满分5分)
1. I don’t mind a_____ to others if I make a mistake.
2. We classmates visited our beloved teacher on hearing his a___ in the capital city.
3. We all a________ her for the way she saved the children from the fire.
4. It’s important to keep the b_______ of nature.
5. If you don’t understand the meaning of a word ,you can c________the dictionary.
6. Xiao Wang felt frustrated that a lot of c_____ went to a newly-opened small restaurant.
7. Nowadays lots of young people want financial _____________(独立)。
8. She _________(哭泣;流泪)when she heard the bad news.
9. It is _________(显而易见的)that even if we can save much energy, we can only delay the energy crisis.
10. He’ll never be__________(原谅)for what he has done .
以下是我们在生活中经常可以看到的几种现象:
①用力揉面团,面团形状发生了变化;
②用力握弹性小皮球,皮球变形了;
③用力拉弹簧,弹簧伸长了;
④用力扳铁丝,铁丝弯曲了;
⑤用力压弹簧,弹簧变短了;
⑥撑杆运动员在撑杆起跳时竹竿变弯了.
在这些现象中,属于弹性变形的是______.