Do you know why different animals or pests (昆虫) have their special colors? Colors in them seem to be used mainly to protect themselves.
Some birds like eating locusts (蝗虫), but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops(庄稼). When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color as crops have. Some other pests with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.
If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters (猎人). This is because they have the colors much like the trees.
Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid (液体)when it faces danger. While the liquid spreads over (散开), its enemies (敌人)cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.From the passage we learn that locusts________.
| A．are small animals | B．are easily found by birds |
| C．are dangerous to their enemies | D．change their colors to protect themselves |
How can pests with different colors from plants keep out of danger?
| A．They run away quickly. | B．They have the colors much like their enemies. |
| C．They hide themselves by day and appear at night. | D．They have to move quietly. |
Bears and lions can keep safe because _________.
| A．they have the colors much like the trees | B．they move quietly |
| C．they like brown and gray colors | D．they live in forests |
Why can the kind of fish live up to now?
| A．Because it is very and strong. |
| B．Because the liquid it sends out can help it escape from its enemies. |
| C．Because the liquid it sends out can kill its enemies. |
| D．Because it swims faster than any other fish. |
Which is the best title for this passage?
| A．The Change of Colors for Animals and Pests | B．Colors of Different Animals and Pests |
| C．The Main Use of Colors for Animals and Pests | D．Some Animals and Pests |
A
A plant is a living thing. It uses its many parts to grow from a small seed to a large plant. Each part helps the plant stay healthy. Plants also need sunlight to grow. They get light from the sun and minerals from the soil. These things help the plant stay alive and grow.
Which word can be filled in the empty box?
| A．Leaves. | B．Sticks. | C．Bushes | D．Grasses |
Which part might grow around the seeds?
| A．The stem. | B．The flower. |
| C．The root. | D．The fruit. |
Which sentence is TRUE according to the passage?
| A．A plant grows flowers under the ground. |
| B．Flowers can grow into new plants. |
| C．Not all plants have fruit. |
| D．The stem helps hold the roots up. |
What's the passage mainly about?
| A．Plant parts. | B．Plant seeds. |
| C．Plant leaves. | D．Plant roots. |
In what subject might you learn this passage?
| A．Geography. | B．Biology. |
| C．Physics. | D．Chemistry. |
Liu Wei is very famous in China because he can play the piano with his toes(脚趾).
One day when Liu Wei was only 10 years old, he played a game with some friends. He lostboth his arms because of electricity.
Liu Wei was very sad when both his arms were cut off after the accident. But soon he had tomake a choice.
“For people like me, there were only two choices. One was to give up all the dreams, whichwould cause a quick death. The other was to work hard without arms to live an excellent life.”
says Liu Wei.
Liu Wei’s dream was to be a pianist. He learned to play the piano with his toes. And teachinghimself to play the piano with his toes was very hard. Many times he wanted to give up, but hisparents went on encouraging him and he wanted to make his parents proud.
Maybe you can not believe that Liu Wei is able to play well only with his toes. The audience(观众) were deeply moved and very excited when they watched his performance.What can Liu Wei play the piano with?
How old was Liu Wei when he lost his arms?
Was Liu Wei very unhappy when both his arms were cut off？
Who encouraged Liu Wei to play the piano?
How did the audience feel when they watched Liu’s performance?
Mobile phone has become a problem for middle schools. Some middle schools in Australia have banned (禁止) students from carrying mobile phones during school hours.
Mobile phone use among children has become a problem for schools. Several children have got mobile phones from parents and friends as Christmas gifts, and more students will want them.
Lucy Bluett, an expert, said mobile phone use was a distraction (分心的事) to students during school hours. Teachers were also saying that sometimes students might use phone messages to cheat during exams.
She said some schools had tried to ban mobile phones. Some parents felt unhappy because they couldn’t call up their children.
Many teachers said students should not have mobile phones at school, but if there was a good reason, they could leave their phones at school office.
Many people say that they understand why parents would want their children to have phones, but they think schools should let the students know when they can use their mobile phones.Some middle schools in Australia have banned students from carrying mobile phones ______.
A．when they are at home
B．when they are free
C．when they are at schoolWe know from the passage that some children get mobile phones from .
A．the makers and sellers
B．the passers-by and strangers
C．their parents and friendsWhat does the underlined word “cheat” mean in the passage?
A．Behave dishonestly.
B．Behave honestly.
C．Behave correctly.Some parents felt unhappy because they couldn’t ______ during school hours.
A．use their mobile phones
B．call up their children
C．help the teachers with their workThe passage tells us that ______.
A．students shouldn’t have mobile phones at school except for some special reasons
B．many people can’t understand why parents would want their children to have phones
C．all parents felt unhappy because they couldn’t use their phones at school
| Join Us Basketball Club: We have a basketball club. It opens in the school on Saturdays. |
| Lost and Found Lost: A black bag in Room 601. Phone Jack White at 6880322. Found: Man’s gold watch. Please call Mr. Green at 6444997. |
| On Sale Pants — for boys, black and new. TV— old but works. Phone number: 5234065, 5234066. |
Where does the basketball club open?
A．In the school.
B．In Room 601.
C．In the store.Jack White wants to________.
A．find a black bag
B．join a club
C．buy an old TV setYou can call at ____________ to get your watch back.
A．6880322 B．5234065 C．6444997How is the TV on sale?
A．It’s new and it works.
B．It’s old but it works.
C．It’s old and it doesn’t work.Which sentence is TRUE?
A．Mr. Green can’t find his bag.
B．Mr. Green finds a watch.
C．Mr. Green likes basketball.
Miss Kate taught physics in a New York school. Last month she was explaining to one of her classes about sound, and she decided to test them to see how well they had understood her explanation. She said to them, “Now, I have a brother in Los Angeles. If I was calling him on the phone, and at the same time you were 80 meters away, and were listening to me from across
the street, which of you would hear what I said earlier, my brother or you and for what reason?”
A boy at once answered, “ Your brother, Miss Kate, because electricity travels faster than sound waves(声波).
“That’s very good.” Miss Kate said, but then Jenny said, “I don’t agree. Your brother would hear you earlier because it is 11 o’clock here, it’s only eight o’clock in Los Angeles.”Miss Kate was a physics teacher.
All her students understood her lesson.
The boy’s answer was not correct.
The boy’s answer was just what Kate wanted her students to know.
Jenny thought the boy’s reason was wrong because she found Los Angeles Time was three hours earlier than New York Time.