In our school, we have early morning and afternoon self-study for 40
minutes every day. Here’s our school’s self-study class schedule. Read it and find out we spend________hours on exams from Monday to Friday every week.
| Self-study Class |
|||||
| Early morning |
Afternoon |
||||
| Read aloud |
Exam |
Sing a song |
Radio |
Exam |
Sing a song |
| 5 minutes |
? |
5 minutes |
5 minutes |
? |
5 minutes |
A. 20 B.100 C. about 1.5
Three kids have been learning chemistry for only a few months. But they have already begun to challenge (挑战) a world famous scientist!
Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator (酸碱指示剂). They want it to take the place of litmus (石蕊) paper.
"We’ve learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other."
British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world.
But when the kids did some experiments in class last winter, they saw that the litmus paper didn’t turn very blue with base matter. It’s hard to get a clear result.
Will there be a better indicator than litmus paper? The three kids decided to try and find out!
How? They went to collect over 40 plants in parks, gardens and markets. Then they ground (研磨) leaves, flowers and stems (茎) to get the pigments (色素) from them.
The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best colour change. They decided it was the litmus paper!
"It’s our first scientific journey, Huang said, "But it makes me want to try harder." Whom did the three kids want to challenge?
| A．Their chemistry teacher. | B．Their headmaster. |
| C．Robert Boyle | D．Thomas Edison |
From the text, a red cabbage is a kind of ____.
| A．plant | B．animal | C．paper | D．liquid |
What is widely used as the acid-base indicator now?
| A．red cabbage | B．litmus paper |
| C．any plant | D．any flower |
The story mainly tells us ____.
| A．how to make litmus paper | B．about the three kids’ spirit |
| C．scientists were wrong | D．the kids are heroes |
Frank bought a new doorbell, but nobody seemed to notice it. When his friends came, they knocked heavily at the door. Frank was not happy about it.
One day a friend came to see Frank. He knocked at the door loudly. Frank came to the door, but didn’t open it. He shouted at the visitor from inside. “ I can’t hear you! Please ring the doorbell!”What did Frank buy?
_____________________________________________________________Why wasn’t Frank happy?
_____________________________________________________________Who came to see Frank one day?
_____________________________________________________________Why didn’t Frank open the door?
_____________________________________________________________Did Frank hear the knock?
_____________________________________________________________
Name Introductions
Daniel Radcliff Born in London, England in 1989
An actor
Played the part of Harry Potter
Celina Dixon Born in Montreal, Canada in 1968
A singing star
In 1997, sang My Heart Will Go On for the film Titanic
Thomas Edison Born in 1847, Kentucky, the USA
Made over 1,000 inventions
Died in 1931
Bill Gates Born in 1955 in the USA
Wrote Business@ the Speed of Thought
Owns Microsoft Company
Mark Twain Born in 1835 in the USA
A writer
Wrote Tom Sawyer
Died in 1910 Who is the youngest of the people?
| A．Daniel Radcliff. | B．Celina Dixon. |
| C．Bill Gates. | D．Mark Twain |
________ people of the five people come from the USA.
A. Five B. Two C. Three D. FourMy Heart Will Go On is the name of a ________.
| A．film | B．book | C．story | D．song |
Thomas Edison died at the age of ________.
| A．81 | B．82 | C．84 | D．85 |
Who wrote Tom Sawyer?
| A．Thomas Edison. | B．Bill Gates. |
| C．Celina Dixon. | D．Mark Twain. |
Plants are very important. This is because plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. Animals can get their food by eating plants and other animals. Man gets his food by eating plants and animals, too. So animals and man need plants to live. This is why there are so many plants around us.
There are two kinds of plants: flowering plants and non-flowering(无花) plants. Almost all the trees around us are flowers and fruit. Non-flowering plants don’t grow flowers. You can’t see many non-flowering plants around you.
If you look carefully at the plants around you, you’ll find that there are many kinds of plants. Some plants are very big and some very small. Most of them are green. We can live on the earth because of the plants around us.Which of the following is the most important according to the passage?
| A．Man. | B．Plants. | C．Animals. | D．Air, water, and sunlight. |
We need many plants around us because _______ .
| A．plants can grow easily | B．plants are green |
| C．we can get what we need from plants | D．we like all kinds of plants |
There are ______ non-flowering plants than flowering plants around us.
| A．much fewer | B．much more | C．much larger | D．much better |
Which of the following doesn’t come from a plant?
| A．Basket. | B．Bread. | C．Cabbage. | D．Stone Forest |
The best title（标题）for this passage may be _________ .
| A．Food from Plants | B．Plants Make Food |
| C．Man and Animals | D．Plants around us |
Baseball is one of the favorite sports in the USA. Children play baseball in sports fields or in parks. At summer picnics, there is often informal (非正式的) baseball game. Boys and girls, young and old take turns to bat. Each team has 9 players. 
American football is perhaps the most popular sport in the USA. The football season begins when the baseball season ends. More people are interested in football than baseball. When there is an important game, thousands of people sit beside the radio or in front of the television to hear the result.
根据短文内容，判断下列句子的正(T)与误(F)。 Baseball is the most popular sport in the USA.
There are eighteen players in a baseball game.
The football season begins in summer.
Some baseball players become famous during the match time.
In the USA most people like baseball better than football.
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