Natural ways of keeping time

In ancient times, people had to use the sun and the moon to tell time. They got up when the sun came up and worked in the fields until the sun went down.

Man-made things

The sand clock is made of two glass balls joined by a narrow neck. The top ball was filled with sand. The sand slowly moved through the neck into the bottom ball. People knew how much time had passed when all the sand had fallen to the bottom ball.

People also made the water clock. They made a small hole near the bottom of a pot. Then they filled the pot with water. Markings inside the pot showed how much time passed as the water dripped (滴) out of the hole.

Nature’s Clocks in Living Things

◆Animals’ Body Clock

Animals do not need clocks to know time. They have a way of telling time by their bodies. Birds know when to fly to warmer places before winter. Some animals know when to keep more food for the cold winter months. Some fish know when it is time to move up the river and lay eggs.

◆Plants have their own clocks

Plants also have their own clocks to keep time. Plants know when to open flow??ers or when to drop their leaves.

◆The Body Clock in Human Beings

People also have their own body clocks. When we get used to our lives, our body clocks can be very accurate (准确的). It can tell us when it is time to wake up. It can also tell us when to eat or to go to sleep.

How could an ancient farmer know when to go back home in the daytime?

A. By looking at the moon.              B. By looking at the stars.

C. By looking at the sun.                D. By feeling whether tired or not.

How many kinds of living things with nature’s clocks are mentioned here?

A. 2.           B. 3.             C. 5          D. 6.

From the passage, we know what man-made things have in common is that_______.

A. both of them have a hole.                      B. both of them are designed with glass balls.

C. both of them can be used only once.        D. both of them tell time in the same way

If you were to walk up to Arthur Bonner and say, “ Hey, Butterfly Man,” his face would break into a smile. The title suits him. And he loves it.

Arthur Bonner works with the Palos Verdes blue butterfly, once thought to have died out. Today the butterfly is coming back — thanks to him. But years ago if you’d told him this was what he’d be doing someday, he would have laughed, “ You’re crazy.” As a boy, he used to be “ a little tough guy on the streets”. At age thirteen, he was caught by police stealing. At eighteen, he landed in prison for shooting a man.

“ I knew it had hurt my mom,” Bonner said after he got out of prison. “So I told myself I would not put my mom through that pain again.”

One day he met Professor Mattoni, who was working to rebuild the habitat for an endangered butterfly called El Segundo blue.

“I saw the sign ‘Butterfly Habitat’ and asked, ‘How can you have a habitat when the butterflies can just fly away?’” Bonner recalls. “Dr. Mattoni laughed and handed me a magnifying glass(放大镜) , ‘Look at the leaves.’ I could see all these caterpillars(蝴蝶的幼虫) on the plant. Dr Mattoni explained, ‘Without the plant, there are no butterflies.’”

Weeks later, Bonner received a call from Dr. Mattoni, who told him there was a butterfly needed help. That was how he met the Palos Verdes blue. Since then he’s been working for four years to help bring the butterfly back. He grows astragalus, the only plant the butterfly eats. He collects butterflies and brings them into a lab to lay eggs. Then he puts new butterflies into the habitat.

The butterfly’s population, once almost zero, is now up to 900. For their work, Bonner and Dr. Mattoni received lots of awards. But for Bonner, he earned something more: he turned his life around

For six years now Bonner has kept his promise to stay out of prison. While he’s bringing back the Palos Verdes blue, the butterfly has helped bring him back, too.

11. When he was young, Arthur Bonner _______.

  A. broke the law and ended up in prison

  B. was fond of shooting and hurt his mom

  C. often laughed at people on the streets

  D. often caught butterflies and took them home

12. Bonner came to know the Palos Verdes blue after he _______.

  A. found the butterfly had died out        

B. won many prizes from his professor

  C. met Dr. Mattoni, a professor of biology  

D. collected butterflies and put them into a lab

13. From the last sentence of the text, we learn that raising butterflies has ________.

  A. made Bonner famous        B. changed Bonner’s life

  C. brought Bonner wealth       D. enriched Bonner’s knowledge

14. What does the underlined phrase “put through” mean in the 3rd paragraph?

A. hurt                         B. recall                C. remember                 D. experience

15. Which of the following would be the best title for the text?

  A. A Promise to Mom               B. A Man Saved by Butterflies

  C. A Story of Butterflies               D. A Job Offered by Dr. Mattoni

“Indeed”George Washington wrote in his diary in 1785, “some kind of fly,or bug,had begun to eat the leaves before I left home.” But the father of America was not the father of bug.When Washington wrote that, Englishmen had been referring to insects as bugs for more than a century, and Americans had already created lightning-bug(萤火虫). But the Enlish were soon to stop using the bugs in their language, leaving it to be the Americans to call a bug a bug in the nineteenth and twentieth centuries.
The American bug could also be a person, referring to someone who was crazy about a particular activity.Although fan became the usual term, sports fans used to be called racing bugs, baseball bugs and the like.
Or the bug could be a small machine or object, for example, a bug-shaped car. The bug could also be a burlar alarm, from which comes the expression to bug, that is, “to install(安装) an alarm”. Now it means a small piece of equipment that people use for listening secretly to others’ conversations.Since the 1840s,to bug has long meant “to cheat”,and since the 1994s it has been annoying.
We also know the bug as a flaw n a computer program or other design.That meaning dates back to the time of Tomas Edison.In 1878 he explained bugs as “little problems and difficulties” that required months of stdy and labor to overcome in developing a successful product. In 1889 it was recorded that Edison “had been up the two previous nights discovering′a bug′ in his invented record player.”
【小题1】We learn from Paragraph 1 that         .

A.American had difficulty in learning to use the word “bug”.
B.George Washinton was the first person to call the insect a bug.
C.the word bug was still popularly used in England in the nineteenth century.
D.both the Englishmen and Americans used the word bug in the gighteen century.
【小题2】What does the word “flaw in the last paragraph mean?
A.Explanation.
B.Finding.
C.Origin.
D.Fault.
【小题3】The passage is mainly concerned with         .
A.the misunderstanding of thr word bug
B.the deveopment of the word bug
C.the public views of the word bug
D.the special characteristics of the word bug


Along the river banks of the Amazon and the Orinoco there lives a bird that swims before it can fly, flies like a fat chicken, eats green leaves, has the stomach of a cow and has claws (爪) on its wings when young. They build their homes about 4.6m above the river, an important feature (特征) for the safety of the young. It is called the hoatzin.
In appearance, the birds of both sexes look very much alike with brown on the back and cream and red on the underside. The head is small, with a large set of feathers on the top, bright red eyes, and blue skin. Its nearest relatives are the common birds, cuckoos. Its most striking feature, though, is only found in the young.
Baby hoatzins have a claw on the leading edge of each wing and another at the end of each wing tip. Using these four claws, together with the beak (喙), they can climb about in the bushes, looking very much like primitive birds must have done. When the young hoatzins have learned to fly, they lose their claws.
During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds, but in April, when the rainy season begins, they collect together in smaller living units of two to seven birds for producing purposes.
1.What is the text mainly about?
A.Hoatzins in dry and rainy seasons.
B.The relatives and enemies of hoatzins.
C.Primitive birds and hoatzins of the Amazon.
D.The appearance and living habits of hoatzins.
2.Young hoatzins are different from their parents in that       
A.they look like young cuckoos
B.they have claws on the wings
C.they eat a lot like a cow
D.they live on river banks
3.What can we infer about primitive birds from the text?
A.They had claws to help them climb.
B.They could fly long distances.
C.They had four wings like hoatzins.
D.They had a head with long feathers on the top.
4.Why do hoatzins collect together in smaller groups when the rainy season comes?
A.To find more food.
B.To protect themselves better.
C.To keep themselves warm.
    D.To produce their young.

Animal moms are great moms. You might be surprised at some of these moms.
Octopuses (章鱼)
The mother octopus lays about 50,000 eggs. For about 300 days, she stays with the eggs, cleans them and protects them. She does not leave to feed. However, this animal mom dies as soon as the eggs are hatched (孵化).
Crocodiles(鳄鱼)
A crocodile mother puts a lot of time and effort into raising her babies. She starts by building a nest (巢), which she guards for over two months! When the eggs are ready to hatch, the young crocs call out to their mother, who digs them out and helps them hatch. She then carries them in her mouth down to the water, where she will guard them for several more weeks or months until they learn to hunt on their own.
Bats (蝙蝠)
Bats become moms by hanging head up in a cave, giving birth. Catching the youngster before it can fall to the ground below, she puts it in a pouch (育儿袋). Bat moms may carry babies with them when feeding for the first few days. As the little bats get bigger and heavier, moms help them hang on the wall of their caves and return often to feed them. It continues for about three weeks, until the babies are grown up and able to fly on their own.
Koalas (考拉)
The animal mom gives birth after a pregnancy (怀孕期) of only 35 days. The hairless baby climbs into its mother’s pouch and lives there for another five months. When the little koala is between five and eight months old, it leaves the pouch for short periods of time but returns for safety. Once it is too big to return to the pouch, it will climb onto its mother’s back and ride there until it is about 12 months old.
【小题1】Which animal moms die when their babies are born?

A.Octopuses.B.Crocodiles.C.Bats.D.Koalas.
【小题2】A crocodile mother usually carries her baby to the water _____.
A.in her mouth B.on her backC.in her pouchD.by her tail
【小题3】A bat mom _____.
A.gives birth by lying in the nest
B.gives birth by hanging in a cave
C.leaves its babies in the pouch for months
D.lets its babies live on their own after birth
【小题4】How long does the bat mom help to feed her babies?
A.About 3 daysB.About 3 weeksC.About 13 weeksD.About 3 months
【小题5】How long does a young koala usually stay with its mom?
A.35 days.B.5 months.C.8 months.D.12 months.

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