What would happen if you tried to blow a soap bubble in freezing weather? Would it freeze solid(固体) 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 (结霜), becoming cloudy instead of clear. And what about those rainbow swirls（旋转） 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.
【小题1】It is the perfect time to blow frozen bubbles on a ___________day.

 Don’t turn on the TV. Lucy has just come home from work and __________.

A．sleeps          B．is sleeping  C．was sleeping  D．slept

短文填空.

根据短文内容及首字母提示，填写所缺单词，使短文意思完整。

Modern industry is developing faster and faster, and many fields, rivers and mountains have been (1) p         . We all need a healthy environment, so it’s (2) n          for us to think about it. When shopping we should take our own cloth bags (3) i          of using plastic bags. If it isn’t too hot, don’t turn on air conditioning because it wastes energy. Sort the waste before (4) t          it away. If you can, you can make a (4) d          to the environment.

What would happen if you tried to blow a soap bubble in freezing weather? Would it freeze solid(固体) 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 (结霜), becoming cloudy instead of clear. And what about those rainbow swirls（旋转） 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 winter        B．warm spring        C．hot summer        D．sunny autumn

2.When the frozen bubbles break, _________.

A．they make a big sound                   B．they turn into small drops

C．they fall to the ground like rain             D．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

句型转换

1.They seemed to know about it. （同义句）

__________  __________ that they___________ about it.

2.Peter won the relay race, too.（否定句）

Peter __________ win the relay race, __________.

3.He is young. He can’t help his father with farm work. （同义句）

He is

__________ young __________ help his father with farm work.

4.Can you tell me how I can get to Chilbi Park? （同义句）

Can you tell me __________  __________ Chibi Park?

5.Lin Tao doesn’t like swimming, and Liu Hai doesn’t like swimming, either.（同义句） __________ Lin Tao __________ Liu Hai __________ swimming..

6.I will go home after I finish the work.（同义句）

I __________ go home __________ I finish the work.

7.Aunt Li had to take Tom to hospital.（对划线部分提问）  

What ______  Aunt Li _______ to do?

8.She shouted at me, “Don’t turn up the radio any more.” She said to me _________ _________ _________ ________, “Don’t turn up the radio again.”