题目列表(包括答案和解析)
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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
听力(共20小题,每小题1.5分,满分30分)
A.看图听句子,选出与句子意思相符的图。(句子读两遍)
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B.听对话,根据你所听到的内容,选择正确答案。(对话读两遍)
听第一段对话,回答第6小题。
6.What festival is it today?
A.Spring Festival.
B.Mid-autumn Festival.
C.Dragon Boat Festival.
听第二段对话,回答第7小题。
7.How does Li Ming learn English?
A.By listening to the radio.
B.By joining the English club.
C.By watching English movies.
听第三段对话,回答第8小题。
8.What kind of music does the man like?
A.Classical music.
B.Folk music.
C.Country music.
听第四段对话,回答第9、10小题。
9.Who is Tom going to the countryside with?
A.His parents.
B.His classmates.
C.His friends.
10.What will the weather be like tomorrow?
A.Sunny.
B.Rainy.
C.Cold.
听第五段对话,回答第11、12小题。
11.When are they going out for lunch?
A.On Thursday.
B.On Friday.
C.On Saturday.
12.What's Sue's favorite food?
A.Hot dogs.
B.Potato chips.
C.Fried chicken.
听第六段对话,回答第13~15小题。
13.How many tickets did Peter have?
A.Three.
B.Two.
C.One.
14.Where is Celine Dion going to give the concert?
A.At the Music Hall.
B.In the square.
C.At the theater.
15.What time is the concert going to start?
A.At 6∶00 p. m.
B.At 7∶00 p. m.
C.At 8∶00 p. m.
C.听短文,根据你听到的内容,选择正确答案。(短文读两遍)
16.What does Nancy do?
A.A doctor.
B.A nurse.
C.A worker.
17.Why did she feel sad that evening?
A.Because her mother was ill.
B.Because she lost her job.
C.Because she couldn't go to the dance party.
18.What's wrong with David?
A.He had an accident.
B.His hands were hurt.
C.He was badly ill.
19.What would David want to do for Nancy?
A.To have a party.B.To help her with the work.
C.To make a card for her.
20.What do you think of David?
A.He is a kind-hearted boy.
B.He is an honest boy.
C.He is a proud boy.
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