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 color 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 |
|
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26．Which club can you join on weekdays？
| A． |
Smart Kids Club． |
| B． |
Global English Club． |
| C． |
Body﹣building Club． |
| D． |
Piano Club． |
27．In which club can you drink and eat fruits while having a rest？
| A． |
Smart Kids Club． |
| B． |
Global English Club． |
| C． |
Body﹣building Club． |
| D． |
Piano Club． |
28．How many choices does Lucy have if she wants to join two clubs at weekends？
| A． |
1 |
| B． |
2． |
| C． |
3． |
| D． |
4． |
29．If you want to talk with native English speakers，please ring ．
| A． |
0816﹣2878806 |
| B． |
0816﹣2515868 |
| C． |
0816﹣2676911 |
| D． |
0816﹣2018367 |
30．What can be the best title for the above four ads？
| A． |
Build Your Body with Us． |
| B． |
Best Clubs Available in Town |
| C． |
Enjoy Your Weekends in Clubs |
| D． |
Fascinating Activities on Weekdays． |
The other day，I told Connie that I'd rather take the bus to work than ride in my comfortable limousine，because of the high cost of gasoline．But today，I discovered how wrong I was．
When I got into my limousine this morning，my driver told me that the motor didn't sound like it was running well．
"Look，"I said，"I have an important meeting at 9：00．I have to be on time!"
We drove about three blocks﹣then the motor died．
"Sorry，Mr．Foster．I thought this might happen．But look!There's the downtown bus．Maybe you should take it．So you don't miss your meeting．"
"Well，I…I…Oh!I suppose I have to．"
I got on the bus and gave the driver my money．
"Mister，are you serious？We can't make change for a ＄100 bill!"
"I AM CHARLES K．FOSTER．AND I ORDER THAT YOU SHOULD MAKE CHANGE!"
"Mister，"said the driver，"I don't care who you are．You will have to get off the bus．"
Well．I was so mad when I got off that bus that I didn't watch where I was going，and I was almost hit by a car!So now，all I have to say is this：My business may be killing me，but riding the bus certainly will．
21．The word"limousine"in Paragraph 1most probably means a ．
| A． |
motorbike |
| B． |
truck |
| C． |
car |
| D． |
bus |
22．Why did the writer's driver suggest him taking the bus？
| A． |
The bus would stop at the meeting﹣room． |
| B． |
The limousine completely broke down． |
| C． |
The driver had an important meeting． |
| D． |
The motor was not running very well． |
23．the writer failed to catch the bus because ．
| A． |
there were too many passengers |
| B． |
it was heading in the wrong direction |
| C． |
the driver couldn't change his money |
| D． |
he was rude in the bus driver |
24．How did the writer feel when he had to get off the bus？
| A． |
Angry． |
| B． |
Uneasy． |
| C． |
Shameful． |
| D． |
Funny． |
25．What can we guess from the last paragraph？
| A． |
The writer was doing well in his business． |
| B． |
Connie would lose his job as the writer's driver． |
| C． |
The writer was sure that he would be killed by a bus． |
| D． |
The writer wouldn't take a bus to work after that． |
A young officer was teaching some old soldiers （士兵）．They had been in the army for many years and did not like officers， young or old．
They did，not think this young officer could tell them anything about how to fight in a war．
Jones was nearly sixty years old and had fought in many wars．
"Imagine you are in a war，the young officer said to him． "You see seven hundred enemy soldiers coming towards you． What do you do？"
Jones thought for a short time，then he said，"I shoot them all with my rifle （步枪）"，
"Now imagine there are seven hundred enemy soldiers coming towards you from the left， the young officer said， uand seven hundred enemy soldiers coming to you from the right． What do you do？""I shoot them wth my rifle，" Jones told him．
" OK" the young officer went on， trying to get the answer he wanted． "But if there are a thousand enemy soldiers coming at you from the right， a thousand coming at you from the left， and another thousand coming straight towards you． What do you do now？"
"I shoot them with my rifle" Jones replied．
"But where are you getting all the bullets （子弹）from？" the young officer asked in a loud voice， Jones smiled， From the same place you are getting all those enemy soldiers．
66． What was tlie young officer doing？
67． Why didn't the old soldiery like officers？
68．How old was Jones？
69． What did Jones do when all the enemy soldiers came towards him？
70． Where was Jones getting the bullets from？
A young man with a large bag on his back came far away for a master （大师）．He said， "Master，I am so lonely an so painful that the long trip makes me tired out，my shoes worn﹣out，my feet cut， and my hands also injured and bleeding…Why can't I find the sunin the heart？ "
The master asked， "What do you put in your large bag？"
The young man said，"lt is very important to me， inside it including the pain each time I fall， the tears each time I'm hurt，the trouble each time I feel lonely…Depending on it， I can come to you here，"
So the master took the young man to the river， where they crossed in a boat． On the other side of the river， the master said， "Hurry on your journey carrying the boat!"
"What， carrying the boat？" the young man was surprised， "it is to heavy． How can I carry it？""Yes'my son， you can't carry it，"the master just．smiled and said， "when you cross the river， the boat is useful﹣ But after crossing it， you will put down the boat and hurry on． If not， it willbecome a burden （负担）． Pain， loneliness and tears﹣﹣all these are useful to life． They can improve life， but if you don't forget them all the time， they will become the burden in life． Put it
down! My son， life can't bear（承受） a heavy burden． "
The young man put down his bag and hurried on． He walked easily and happily，and much fas﹣ter than before．
46． What does the underlined words Mthe sun" mean probably？
| A． |
Health． |
| B． |
Wealth． |
| C． |
Success． |
| D． |
Happiness． |
47． What's in his large bag？
| A． |
Clothes， tears and food． |
| B． |
Pain， tears and trouble． |
| C． |
Clothes， food and water． |
| D． |
Pain， water and trouble﹣ |
48．How did they cross the river？
| A． |
By boat |
| B． |
On foot． |
| C． |
By swimming． |
| D． |
Across the bridge． |
49．Why did the master ask him to cany the boat？
| A． |
To teach him to improve his life： |
| B． |
To tell him the boat is very useful |
| C． |
To tell him the boat is very important． |
| D． |
To teach him to put down his burden． |
50．How did the young man feel after he put down his bag at last？
| A． |
Awful． |
| B． |
Painfu． |
| C． |
Relaxed． |
| D． |
Surprised． |
Sleep is a very important part of our lives． After a long day， we all like the feeling of a soft bed． We know how good it will feel in the morning after we get some rest． Sleep is also very important to animals． They also need sleep after they work hard．
Some animals sleep in the sea．Fish have eyelids （眼睑），so they sleep with their eyes open! sea otters sleep in seaweed （海草）on top of the sea，The seaweed keeps the otters from mov﹣ing along． Most sharks keep swimming when they sleep． Some fish find a little hole in the coral（珊瑚）hide so they can sleep． The clown fish turns on its side to sleep at the bottom of the sea．
Some animals sleep under the ground! When it's hot，many frogs sleep in a hole because they
want to avoid die heat． Some frogs spend the whole summer in their holes． Groundhogs live in holes in the ground， so they also sleep underground． Foxes sometimes steal a groundhog's home and use it astheir own home．
What about animals that live above the ground？ Birds sleep in their nests on trees．A bird's
claws （爪）close when they sleep． This helps them stay oil the tree． Bats sleep upside down for twenty hours a day!
No matter what kind of animal you are， you need your sleep．
41．When will we feel good in the morning？
| A． |
After having breakfast． |
| B． |
After taking shower． |
| C． |
After getting some rest |
| D． |
After taking some exercise． |
42．Why do fish sleep with their eyes open？
| A． |
Keeping swimming． |
| B． |
Having no eyelids． |
| C． |
Sleeping in seaweed． |
| D． |
Sleeping in the coral． |
43．Why do many frogs spend the summer in the holes？
| A． |
To lay eggs． |
| B． |
To get food |
| C． |
To avoid the enemies． |
| D． |
To avoid the heat． |
44．How do bats sleep？
| A． |
Upside down |
| B． |
In the hole． |
| C． |
On the tree， |
| D． |
On its side． |
45．The passage tells us that
| A． |
only people need sleep |
| B． |
all animals need sleep |
| C． |
birds need sleep on the tree |
| D． |
foxes sleep in their own holes |