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Why can’t penguins fly?

Even the very smallest penguin,the fairy penguin,weighs 1 kg,which is about as much as a herring gull (银鸥). But herring gulls have a 1.4-meterwingspan,compared with just 32 centimeters for the fairy penguin. Water is 784 times denser (密度较大的) than air,and around 62 million years ago,penguins began making adaptations for swimming underwater. Their bones are filled with heavy bone marrow (骨髓)rather than air and they have much larger stomachs for making long fishing trips away from the nest.

How do squirrels find buried nuts?

It was once thought that they just used their noses to sniff out buried nuts and that the majority were never actually located. But a study at Princeton University showed that squirrels actually have a good memory and can build a map of the route from one hidden nut to the next.

Why don’t horses have toes?

Early horses such as Hyracotherium, which lived 55 million years ago, did have toes, but they were much smaller animals. For taller animals, extra weight at the end of their legs has a much bigger influence on their speed. A recent study at Harvard University, the USA, found that one broad hoof (蹄) is almost as strong as many smaller toes, but much lighter.

Do animals have blood types?

Yes, they do! As long as the animals in question have blood (not all do)then they will have species-specific “blood groups”. As with humans, these groups are determined by the structure of the blood based on the presence or absence of antibodies along with the make-up of the proteins that sit on the outside of red blood cells.

Humans are usually one of four main blood types. Thirteen types have been identified for dogs, eight for horses and three for cats.

【小题1】Why can’t penguins fly?
A.Because of their physical characteristics.B.Because of their poor adaptation.
C.Because of their habits of swimming.D.Because of their changing environment.
【小题2】How many blood types do horses have?
A.3.B.4.C.8.D.13.
【小题3】What can we infer from this text?
A.Squirrels find buried nuts by chance.B.Horses are stronger without hooves.
C.All animals have their blood types.D.An animal is a book with secrets.
【小题4】What could be the best title for this text?
A.Questions you may be interested inB.Questions on the animal kingdom
C.Secrets to discover in natureD.Knowledge around you
21-22高三上·河北石家庄·阶段练习
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International Tiger Day is an annual celebration to raise the awareness of tiger conservation. It’s held on 29 July. Governments and citizens across the world organize awareness programs on that day to spread the importance of protecting tigers.

From ancient times, tigers were the subject of constant attraction for their beauty, size and sometimes mythical stories related to them. People’s fascination (迷恋) for tigers is obvious from the fact that tigers are still a part of many national symbols and flags. Tigers are the largest cat species. Unfortunately, the population of tigers is fast decreasing. Every part of tigers from tail to skin to nail is traded in the illegal market for very high values. Many tigers are hunted, which is one of the key threats to their existence. They are also caught and raised as pets. 97 percent of the world tiger populations decreased in the last 100 years and only 3,890 tigers are left. If tigers get extinct, we will lose a species. And it also means that enough forests have been destroyed, which may endanger many other species.

For us, tigers are symbols of wildlife’s fighting for survival. It reminds us of the dangers we face because of people’s over-exploitation (过度开发) of the nature. It’s an opportunity as well. Many efforts are on the way to double the tiger population by 2024. Strict national and international laws are against hunting and trading tigers. As a result, the number of tigers in the wild has risen for the first time in more than 100 years. Even though this is just a small increase, it’s a huge symbolic victory in our efforts against the destruction of forests and wildlife. It’s very important that we all join together in this effort, not only to save tigers, but also to save our forests.

【小题1】What can we learn about International Tiger Day?
A.It’s celebrated on 29 June.B.It’s held once every four years.
C.Lots of money is collected on that day.D.Some activities are held worldwide for it.
【小题2】According to Paragraph 2, how do people feel about tigers?
A.Tigers are uncommon.B.Tigers might destroy their homes.
C.Tigers are very dangerous animalsD.Tigers can be used to show a nation’s spirit.
【小题3】The population of tigers is fast decreasing mainly because ________.
A.they are hunted for trade in illegal marketsB.they are not as healthy as before
C.many people keep them as petsD.some of them are kept in zoos
【小题4】Which of the following is TRUE according to the last paragraph?
A.We’ve acheived nothing in protecting tigers.
B.The population of tigers has been doubled.
C.We should put more effort into protecting tigers.
D.The lack of food is the key threat to tigers’ existence.

One night I received a Facebook message from Laura, a former classmate. “Hey Steve,” she said, “I know you’ve always been an animal lover. I’ve just had a baby and I can’t keep my mini pig.”

Being fond of animals, I knew I wanted the pig. I just had to figure out how to make it happen. I lived in a two-bedroom single-level house in Georgetwon, Ontario. It’s tough to bring a pig back to the house I share with two dogs, two cats, and my lifelong partner.

But I was not letting that pig go. So I told Laura I’d take the animal. When I got home with the pig, I hid her in the bedroom, and began to prepare a dinner for Alisha —her favourite bacon cheeseburgers. It’s better to make her happy before introducing the new member to her.

When I led her to the bedroom and showed her the surprise, Alisha stood in the doorway like a statue. It took her a few seconds to know what I had done. She complained about my unreasonable action. She insisted there was no more room in the house.

I knew I was wrong, but I hoped I could smooth things over. Soon enough, the lovely pig did the smoothing for me. Never had we felt such joy as she brought to us. We got her a name “Esther”.

Esther’s arrival changed our lives. A few weeks later, we decided to stop eating bacon. We figured it was our turn to try to change the world for other animals. A few months later, we moved to a farm where we cared for abandoned animals — so far, six rabbits, six goats, two sheep, one horse, three cows and three chickens.

【小题1】Which of the following has the closest meaning to the underlined words in Paragraph 5?
A.clarifyB.continueC.settleD.improve
【小题2】Why did the author cook Alisha a meal?
A.To please her to accept the pig.B.To make an apology to her.
C.To celebrate Esther’s arrival.D.To show off his cooking skills.
【小题3】What was Alisha’s reaction the moment she saw Esther?
A.She burst into tears.B.She showed interest in her.
C.She quarreled with Steve.D.She was frozen for a while.
【小题4】What is the best title for the text?
A.A Small Pig Making a Big Difference
B.An Abandoned Pig Finding a Warm Home
C.A Little Pig Bringing Happiness to a Family
D.A Lovely Pig Removing a Couple’s Disagreement

A Wolf in Danger

What is happening to the timber wolf (森林狼) today?

Native Americans and early settlers often went to sleep to the sound of a lonely lullaby (催眠曲). It was the song of the wolf howling in a distant forest. There were many wolves then. One kind was the North American timber wolf.

Wolves are important to the balance of nature because they eat sick and weak animals. In Colorado, people tried to help deer by shooting wolves. But then there were so many deer that many of them starved to death.

The timber wolf is on the endangered special list . Animals on this list are in danger of disappearing from the earth. People drove the wolves away by cutting down the forests to build houses, towns, and highways. Timber wolves are now found only in Canada, Alaska, Michigan, and Minnesota.

This special animal may soon disappear from our forests forever. Then, its lonely howl will never be heard again.

【小题1】Animals that are in danger of disappearing from the earth are called a(n)_______species.
A.endangered
B.living
C.alive
D.lived
【小题2】Wolves help the balance of nature because they _______.
A.are an endangered species
B.eat sick and weak animals
C.no longer live in forests
D.help the farmers
【小题3】At one time, the timber wolf was found _______.
A.in many parts of North America
B.only in Colorado and Canada
C.in towns and cities in Alaska
D.in many parts of Africa
【小题4】Which of the following happened first?
A.People built towns and highways.
B.The timber wolf was driven away from its home.
C.People cut down the forests.
D.Timber wolves are endangered species.

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