An INTERESTING experiment
It takes a little skill to do this experiment, but the result is truly SURPRISING.
What do you need? Several rubber balloons Wooden skewer(木签) Vegetable oil Paper towel | Step l Blow up a balloon, let some of the air out of it, and tie it closed. | |
Step 2 Rub some oil on skewer with paper towel. | ||
Step 3 Gentle twist(搓捻)and push skewer into end of balloon opposite the knot. If balloon pops(爆 炸),go back to Step 1. | ||
Step 4 When skewer is in balloon, slowly twist and push it out of balloon near knot. | ||
What will happen? | 28 The balloon does not pop, even though it has a skewer in it. | |
Why won't it pop? | Rubber is made out of long chains of molecules (分子). The skewer pushes these molecules aside. The molecules mix with the oil and they stick together tightly. The oil on the skewer seals the hole and air cannot get out. |
1.Which is the most suitable word for 28 ?
A.Topic B.Result C.Problem D.Reason
2.What’s the proper meaning of the underlined word "seals"?
A.密封 B.润滑 C.点燃 D.腐蚀
3.What can we infer(推断)from the passage?
A.It's easy to push a skewer into and out of a balloon.
B.You'd better blow as much air as possible into a balloon.
C.There's no need for you to use the oil while doing the experiment.
D.It's hard for the air to get out of the hole as molecules and oil stick together.
九年级英语阅读单选简单题
An INTERESTING experiment
It takes a little skill to do this experiment, but the result is truly SURPRISING.
What do you need? Several rubber balloons Wooden skewer(木签) Vegetable oil Paper towel | Step l Blow up a balloon, let some of the air out of it, and tie it closed. | |
Step 2 Rub some oil on skewer with paper towel. | ||
Step 3 Gentle twist(搓捻)and push skewer into end of balloon opposite the knot. If balloon pops(爆 炸),go back to Step 1. | ||
Step 4 When skewer is in balloon, slowly twist and push it out of balloon near knot. | ||
What will happen? | ____▲______ The balloon does not pop, even though it has a skewer in it. | |
Why won’t it pop? | Rubber is made out of long chains of molecules (分子). The skewer pushes these molecules aside. The molecules mix with the oil and they stick together tightly. The oil on the skewer seals the hole and air cannot get out. |
1.Which is the most suitable word for “ ▲ ”?
A.Topic B.Result C.Step 5 D.Reason
2.What can we infer(推断)from the passage?
A.It’s easy to push a skewer into and out of a balloon when doing the experiment.
B.You’d better blow as much air as possible into a balloon to make it big enough.
C.There’s no need for you to use the oil and paper towel while doing the experiment.
D.It’s hard for the air to get out of the hole as molecules and oil stick together.
九年级英语阅读单选中等难度题查看答案及解析
An INTERESTING experiment
It takes a little skill to do this experiment, but the result is truly SURPRISING.
What do you need? Several rubber balloons Wooden skewer(木签) Vegetable oil Paper towel | Step l Blow up a balloon, let some of the air out of it, and tie it closed. | |
Step 2 Rub some oil on skewer with paper towel. | ||
Step 3 Gentle twist(搓捻)and push skewer into end of balloon opposite the knot. If balloon pops(爆 炸),go back to Step 1. | ||
Step 4 When skewer is in balloon, slowly twist and push it out of balloon near knot. | ||
What will happen? | 28 The balloon does not pop, even though it has a skewer in it. | |
Why won't it pop? | Rubber is made out of long chains of molecules (分子). The skewer pushes these molecules aside. The molecules mix with the oil and they stick together tightly. The oil on the skewer seals the hole and air cannot get out. |
1.Which is the most suitable word for 28 ?
A.Topic B.Result C.Problem D.Reason
2.What’s the proper meaning of the underlined word "seals"?
A.密封 B.润滑 C.点燃 D.腐蚀
3.What can we infer(推断)from the passage?
A.It's easy to push a skewer into and out of a balloon.
B.You'd better blow as much air as possible into a balloon.
C.There's no need for you to use the oil while doing the experiment.
D.It's hard for the air to get out of the hole as molecules and oil stick together.
九年级英语阅读单选简单题查看答案及解析
Do you know the TV play Mother Tiger and Father Cat? It is an interesting play. The little girl Qianqian is only seven years old. She is in Grade One. Her mother wants her to study hard. She takes her daughter to all kinds of after-school classes, such as math, piano and swimming. She doesn’t let Qianqian go to the zoo or the amusement park. In a word, she keeps her daughter studying all the time.
But Qianqian’s father thinks happiness is more important than study. He usually plays with her. Sometimes, he even does homework for her.
Who do you like better, Mother Tiger or Father Cat? Do you think who is right? If you want to be happy and get good grades in your study, what would you do?
1.What is Mother Tiger and Father Cat?
____________________________________________________________________
2.What grade is Qianqian in?
____________________________________________________________________
3.What does Qianqian’s mother want her to do?
____________________________________________________________________
4.In Qianqian’s father’s opioion, what is more important?
____________________________________________________________________
5.Are your parents like Qianqian’s mother or father?
____________________________________________________________________
九年级英语回答问题困难题查看答案及解析
I am very happy that I will have _______ time to watch an interesting football match.
A. little B. few C. many D. plenty of
九年级英语单选题中等难度题查看答案及解析
A/An ________ means ability to to do something well.
A. skill B. advantage C. machine
九年级英语单项填空中等难度题查看答案及解析
— Do you know some robots are able to take care of children?
— Really? ________ interesting it is!
A.What B.What an C.How D.How an
九年级英语单选题困难题查看答案及解析
This March is a busy month in Shanghai. There’s a lot to do. Here are the interesting activities.
Live Music—Late Night Jazz
Enjoy real American jazz from Herbie Davis, the famous drum player. He’s coming with his new 7-piece band, Herbie’s Heroes. Herbie is known to play well in the early hours, so don’t expect to get much sleep. This is Herbie’s third visit to Shanghai. The first two were sold out, so get your tickets quickly.
PLACE:The Jazz Club DATES:15~23 March
PRICE:¥80, ¥120 TIME:10:00p.m. till late!
TEL:6466-8736
PLACE:The Jazz Club DATES:15~23 March
PRICE:¥80, ¥120 TIME:10:00p.m. till late!
TEL:6466-8736
Scottish dancing
Take your partners and get ready to dance till you drop. Scottish dancing is fun and easy to learn. Instructors will explain the dances. The live band, Gordon Stroppie and The Weefrees and also excellent.
PLACE:Jack Stein’s DATES:every Monday
PRICE:¥60, ¥including one drink TIME:7:00~10:00p.m.
TEL:6402-1877
PLACE:Jack Stein’s DATES:every Monday
PRICE:¥60, ¥including one drink TIME:7:00~10:00p.m.
TEL:6402-1877
Exhibitions—Shanghai Museum
There are 120,000 pieces on show here. You can see the whole of Chinese history under one roof, It’s always interesting to visit, but doubly at the moment with the Egyptian Tombs Exhibition. There are lots of mummies and more gold than you’ve ever seen before. Let us know if you see a mummy move!
PLACE:Shanghai Museum
PRICE:¥30,(¥15 for students)
TEL:6888-6888 DATES:daily
TIME:Monday ~ Friday 9:00a.m. ~ 5:00p.m. , Weekends 9:00a.m. ~ 9:00p.m.
PLACE:Shanghai Museum
PRICE:¥30,(¥15 for students)
TEL:6888-6888 DATES:daily
TIME:Monday ~ Friday 9:00a.m. ~ 5:00p.m. , Weekends 9:00a.m. ~ 9:00p.m.
Dining—Sushi chef in town
Sushi is getting really big in Shanghai. In Japan, it’s become an art form. The most famous Sushi“artist”is Yuki Kamura. She’s also one of the few female chefs in Japan. She’ll be at Sushi Scene all of this month.
PLACE:Sushi Scene in the DATES:all month
PRICE:¥200 TIME:lunchtime
TEL:6690-3211
PLACE:Sushi Scene in the DATES:all month
PRICE:¥200 TIME:lunchtime
TEL:6690-3211
For a full list of events, please see our website.
1.Suppose you are going to attend an activity at 8:00p.m.on Saturday, which one can you choose?
A. Live Music—Late Night Jazz
B. Scottish dancing
C. Exhibitions—Shanghai Museum
D. Dining—Sushi chef in town
2.Which of the following is True according to the advertisements?
A. The performance given by the American jazz band won’t last long.
B. Scottish dancing is so interesting and easy that it will never tire you out.
C. Kamura made Sushi popular in Shanghai.
D. It is more interesting to visit Shanghai Museum with the exhibits from Egypt.
3.From the text we may guess that Kamura is .
A. a cook B. a waitress C. an instructor D. an artist
九年级英语阅读单选困难题查看答案及解析
Marking a book is _________ useful skill, but it is important to do it right.
A. a B. an C. the D. /
九年级英语单选题简单题查看答案及解析
—Would you like to do __________ interesting with me?
—I’d love to, but I have a piano lesson this afternoon.
A. something B. anything C. nothing D. everything
九年级英语单选题中等难度题查看答案及解析
Little Baby knows that he should not take the things that do not belong to ___________.
A. he B. his C. her D. him
九年级英语单选题中等难度题查看答案及解析