Many people know weather report is very useful. Lots of them think they can 1 what the weather is going 2 . But they don't 3 in the same way. one man may say, “Do you see 4 cloudy it is in the east? It's going to 5 tomorrow.” 6 man will say, “Yes, we shall have rainy weather tomorrow.”

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 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

Have you ever heard anyone say“It’s raining cats and dogs”? It means“It’s raining hard!”
　　But sometimes cats and dogs do drop from the sky! Here’s how it happens.
　　Not so long ago, a country far away had many large rats. The people there said,“We need cats!”So cats were sent to them by airplane. But the country had many mountains. It was hard for an airplane to land. So the cats came down by parachute(降落傘). Did the cats like the ride? They didn’t say they didn’t! And today they are still catching rats!
　　In another country far away, there is snow the year around. People sometimes got lost in it.
　　“We need big dogs!”the people said.“The dogs could find people lost in the snow. The dogs could help bring them home. Where can we get big dogs?”
　　A man across the sea had big dogs to sell.“I will send dogs to you.”He said.“I have some very big ones. They can find people lost in the snow.”
　　He sent the dogs by airplane.
　　But the airplane didn’t land in the snow. The dogs came down by parachute—you guessed it!
　　Did the dogs like the ride? They didn’t say they didn’t! And today they are well and happy. They find anyone who gets lost in the snow. Then they help him get home. Good dogs!
　　Remember it, so you can say,“Yes, it does rain cats and dogs sometimes. They came down by parachute!”
　　1．The underlined word“it”in Paragraph 2 refers to_________.
　　A. the weather
　　B. the saying“It’s raining cats and dogs.”
　　C. the saying“It’s raining hard.”
　　D. the fact that real cats and dogs drop from the sky
　　2．Cats and dogs drop from the sky because_________.
　　A. there are many mountains in the country
　　B. it snows the year around in the country
　　C. it was hard for a plane to land in the two countries
　　D. coming down by parachute could save money
　　3．The underlined sentence“They didn’t say they didn’t!”in Paragraph 3 means“_________”.
　　A. Poor animals       B. Good animals
　　C. Have a nice trip       D. Thank you
　　4．Which of the following is not true according to the passage?
　　A. Cats and dogs can help people quite a lot.
　　B.“It rains cats and dogs.”usually means a heavy rain.
　　C. When the people saw cats drop from the plane, they were pleased.
　　D. The man across the sea didn’t want his dogs dropped by air.
　　5．The main purpose of the passage is to_________.
　　A. tell the readers a famous British saying
　　B. tell the readers of a new meaning about an old saying
　　C. show cats and dogs are our good friends
　　D. show parachutes is an important invention