Question

【題目】

What would happen if you tried to blow a soap bubble in freezing weather? Would it freeze solid(固體) and fall to the ground? Would you have to hit it to break it? These questions happened to me on a cold winter day. It was too cold to play in the snow, but it was a perfect time to experiment with blowing frozen bubbles.

To blow frozen bubbles, I used dishwashing soap and a drop of glycerin（甘油） to make it even better. I chose a place out of the wind, and blew bubbles the same way I always do. I watched to see what would happen. Here’s what I learned.

If the temperature is low enough, the skin of the bubbles frosts over (結(jié)霜), becoming cloudy instead of clear. And what about those rainbow swirls（旋轉(zhuǎn)） you see in soap bubbles? The rainbow colors stay even when the bubbles frost, but they don’t swirl anymore. The bubbles still stay in the air. They don’t fall to the ground any faster than they would on a warm summer day.

When these frozen bubbles break, they don’t turn into small water drops as summer bubbles do. They turn into flashing rainbow confetti（碎屑） and move slowly to the ground. Sometimes a frozen bubble will roll across the snow without breaking. If nothing disturbs the bubble, it may stay there for a long time. Sometimes I could catch a bubble and hold it until the heat of my hand made it pop.

I learned another thing about blowing frozen bubbles. It’s so interesting that I want to try it again next year.

【1】It is the perfect time to blow frozen bubbles on a ___________day.

A.cold winterB.warm springC.hot summerD.sunny autumn

【2】When the frozen bubbles break, _________.

A.they make a big soundB.they turn into small drops

C.they fall to the ground like rainD.they become rainbow confetti

【3】The purpose of the passage is _______.

A.to learn how to do a science experiment

B.to show the experiment of blowing frozen bubbles

C.to discover games that are fun to play in the snow

D.to invent a new kind of soap that makes stronger bubbles

Answer 1

【答案】

【1】A

【2】D

【3】B

【解析】

本文是一篇說明文。文章主要介紹了一個(gè)在冬季吹肥皂泡的實(shí)驗(yàn)，告訴我們在冬季吹肥皂泡會(huì)發(fā)生什么現(xiàn)象。

【1】細(xì)節(jié)理解題。根據(jù)第一段“but it was a perfect time to experiment with blowing frozen bubbles”描述,可知選A。

【2】細(xì)節(jié)理解題。根據(jù)第四段“When these frozen bubbles break, they don’t turn into small water drops as summer bubbles do. They turn into flashing rainbow confetti（碎屑）”描述,可知選D。

【3】主旨大意題。這篇短文主要介紹了一個(gè)在冬季吹肥皂泡的實(shí)驗(yàn)，告訴我們在冬季吹肥皂泡會(huì)發(fā)生什么現(xiàn)象，故選B。

本文淺顯易懂，層次分明，學(xué)生很容易把握文章中心內(nèi)容。答題中注意帶著問題閱讀短文，一般就能順利找出答題依據(jù)。對(duì)于不能直接找到根據(jù)的問題注意聯(lián)系上下文，根據(jù)短文中心總結(jié)出正確答案。