1.Water is __________(有益) to both plants and ...

1.Water is __________(有益) to both plants and animals.

2.To their __________（恼怒，生气）, he decided not to come back for the Spring Festival.

3.Our new school library is __________(可使用的，可进入的) to every student in our school for free.

4.We look at the child with __________(同情).

5.Children under 14 must be __________（陪伴）by an adult.

6.The broken blue bike was found __________(抛弃，遗弃) by the river side.

7.As I was sorting out my __________(住处), a door bell rang.

8.These facts are __________(与…有关) to the case.

9.You should encourage the young __________(参与者) to run the company.

10.This paper is __________(分配) free.

11.The boss gave her the job on the headmaster’s __________(推荐).

12.She __________（致谢）his help in her book.

13.They are busy making __________（准备） for the wedding.

14.She felt her home wasn’t __________（讲究的，高雅的）enough.

15.He made a __________(捐赠) to the stricken area.

高二英语单词拼写困难题查看答案及解析

Both humans and animals have enemies. It is easy for us to know the difference between our friends and our enemies. But can other animals do the same? Elephants can! They can use their sense of vision and smell to tell the difference between people who mean a threat and those who do not. In Kenya, researchers find that elephants react differently to clothing worn by men of the Maasai and Kamba ethnic groups. Young Maasai men hunt animals and thus mean a threat to elephants; Kamba men are mainly farmers and are not a danger to elephants.

In an experiment conducted by animal scientists, elephants were first presented with clean clothing or clothing that had been worn for five days by either a Maasai or a Kamba man. When the elephants noticed the smell of clothing worn by a Maasai man, they moved away from the smell faster and took longer to relax than when they noticed the smells of either clean clothing or clothing worn by a Kamba man.

Clothing color also plays a role. In the same study, when the elephants saw red clothing not worn before, they reacted angrily, as red is typically worn by Maasai men. Rather than running away as they did with the smell, the elephants acted angrily toward the red clothing.

The researchers believe that the elephants’ emotional reactions are due to their different senses of smell and sight. Smelling a possible danger means that a threat is nearby and the best thing to do is run away and hide. Seeing a potential threat without its smell means that risk is low. Therefore, instead of showing fear and running away, the elephants express their anger and become aggressive.

1.The author wrote the text in order to tell us that elephants are _____.

A. dangerous　　 B. friendly　　 C. clever　　 D. naughty

2.How did the elephants react to smells in the study?

A. They attacked a man with the smell of new clothing.

B. They needed time to relax when smelling something unfamiliar.

C. They became anxious when they smelled Kamba-scented clothing.

D. They were frightened and ran away when they smelled their enemies.

3.What can be inferred about the elephants’ behavior from this text?

A. Elephants can tell enemies from friends.

B. Elephants have a sharper sense of smell than sight.

C. Elephants are more intelligent than other animals.

D. Elephants tend to attack rather than escape when in danger.

4.In which section of a magazine will the text be most probably found?

A. Business.　　 B. Fashion.　　 C. Nature.　　 D. News.

高二英语阅读理解困难题查看答案及解析

______ is a good form of exercise for both the old and the young.

A. Walk　　     　 B. To walk　　　　　

C. Walking     　　　 D. The walk

高二英语单项填空中等难度题查看答案及解析

For thousands of years, mankind has produced plants and animals to create more desired and useful plants and animals. For example, modern com has been produced to such a large size that it is no longer able to reproduce without man’s assistance. Modern dairy cows produce too much milk and if they are not often emptied of milk, they could leak, burst, become infected, and possibly die. Besides, most dogs raised by people can not survive in the wild even with special training.

Since natural evolution is extremely slow and mankind’s selective production programs only take a few generations to produce a completely new species, natural evolution has already taken a back seat to mankind’s production programs. In addition, mankind has successfully killed off several species all together. For example, there are no more European wolves in existence and mammoths (猛犸象) probably died out because of mankind. Even certain diseases have been permanently got rid of from the planet, and dozens of other diseases will soon be too. Again, natural evolution did i»t cause most of the destruction during man’s rule of the world.

Currently, scientists are creating new species with desired characteristics in the lab significantly faster than natural evolution creates new species. In a single generation, new species can be created and destroyed by mankind, while natural evolution could take thousands of years to do the same but only accidentally. Scientists are even able to replace defective (有缺陷的) or damaged genes with different genes to attempt to cure genetic defects. This is something that natural evolution could possibly never correct.

Eventually scientists will even be able to improve the quality of people. For example, imagine not only correcting your eyesight with gene treatment, but also ensuring that all of your children do not receive your old genes of poor eyesight too. Scientists will one day be able to improve the memory and intelligence of your children, so that they will do better in school and achieve more in life. Doctors and scientists will be able to customize (订制) babies before they are born just like picking options at a car store.

1.According to the first paragraph,______ .

A. man-made evolution has improved all species

B. man-made evolution has weakened some species

C man-made evolution can make up for all natural losses

D. natural evolution won’t happen without man’s assistance

2.What does the underlined part “taken a back seat to” in Paragraph 2 mean?

A. Become powerful assistance to.

B. Become a huge barrier to.

C Speeded up the process of.

D. Played a less important role than.

3.What does the third paragraph mainly talk about?

A. Why natural evolution happens so slowly.

B. The way scientists adopt to have genetic defects repaired.

C. The advantages of man-made evolution over natural evolution.

D. How scientists make use of man-made evolution to create new species.

4.What can we infer from the passage?

A. Near-sighted parents will be able to produce babies with good eyesight in the future.

B. Doctors and scientists will be responsible for mass production of babies in the future.

C. It is natural evolution that is to blame for the destruction of European wolves and mammoths.

D. Children can now have their memory and intelligence improved with the help of gene treatment.

高二英语阅读理解中等难度题查看答案及解析

Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back. Plants certainly cannot run away, and they lack teeth and claws. But plants can defend themselves by using both physical and chemical means.

Some plants have their own ways to keep animals away. For example, the leaves of the holly plant have sharp spines(刺) that discourage grass-eating animals. Holly leaves on lower branches have more spines than leaves on upper branches. This is because the lower leaves are easier for most animals to reach.

Some plants , such as the oak trees, have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material; eating such grasses wears down the animal’s teeth.

Many plants also have chemical defenses. Some plants produce chemicals that taste bitter or cause an unpleasant reaction. Some plants may fight against an attack by increasing the production of these chemicals. When a caterpillar(毛虫)bites a tobacco leaf, the leaf produces a chemical messenger. This messenger sends to the roots the information to produce more nicotine. The higher levels of nicotine discourage the caterpillar.

Many plants depends on both physical and chemical defenses. A certain plant in China , for instance, has prickly(多刺的) leaves, and each prickle contains poisonous venom(毒液). A single experience with this kind of plant will teach an animal to stay away from it in the future.

1.The holly plant has more spines on the lower leaves because most animals ________.

2.To defend themselves , oak trees use ________.

3. How does tobacco protect itself against an attack from a caterpillar?

4.What would be the best title for this passage?

高二英语阅读理解中等难度题查看答案及解析

Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back. Plants certainly cannot run away, and they lack teeth and claws. But plants can defend themselves by using both physical and chemical means.

Some plants have their own ways to keep animals away. For example, the leaves of the holly plant have sharp spines (刺) that discourage grass-eating animals. Holly leaves on lower branches have more spines than leaves on upper branches. This is because the lower leaves are easier for most animals to reach.

Some plants, such as the oak tree, have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material; eating such grasses wears down the animal’s teeth.

Many plants also have chemical defenses. Some plants produce chemicals that taste bitter or cause an unpleasant reaction. Some plants may fight against an attack by increasing the production of these chemicals. When a caterpillar (毛虫) bites a tobacco leaf, the leaf produces a chemical messenger. This messenger sends to the roots the information to produce more nicotine. The higher levels of nicotine discourage the caterpillar.

Many plants depend on both physical and chemical defenses. A certain plant in China, for instance, has prickly (多刺的) leaves, and each prickle contains poisonous venom (毒液). A single experience with this kind of plant will teach an animal to stay away from it in the future.

1.The holly plant has more spines on the lower leaves because most animals________.

A．are not tall enough             B．like the lower leaves only

C．are not clever enough           D．can get the lower leaves easily

2.To defend themselves, oak trees use________.

A．chemical means B．physical means

C．bitter chemicals                 D．sandy materials

3.How does tobacco protect itself against an attack from a caterpillar?

A．Its leaves fight against the attack by physical means.

B．Its roots send a messenger to discourage the caterpillar.

C．Its roots increase the production of nicotine when it is attacked.

D．Its leaves produce poisonous sand to drive the caterpillar away.

4.What would be the best title for this passage?

A．Plants and Animals           B．How Plants Defend Themselves

C．Attacks and Defenses       D．How Animals Eat Plant Leaves

高二英语阅读理解中等难度题查看答案及解析

Some of the planet’s most precious animals and plants are disappearing, according to the World Conservation Union (IUCN). The group, based in Switzerland, works with governments and experts to protect threatened species. On September 12, the IUCN released its Red List, a list of species at greatest risk of extinction.

The list includes 41,415 animals and plants. The IUCN says that habitat destruction, hunting and other causes threaten one in four mammals, one in eight birds and one in three amphibians(两栖动物).

Who is to blame?

Scientists believe that 99 percent of threatened species are at risk because of human activity. “We are losing animals and plants at a high rate,” says Julia Marton-LefEevre, director general of the IUCN. “We need to change our behavior.” Warmer oceans and over-fishing are changing sea life. This year for the first time corals(珊瑚) made their appearance on the list. The gharial, a crocodile living in India and Nepal, has lost almost 60 percent of its population in the last 10 years. It is a victim（受害者）of habitat destruction.

Still, the news is not all bad. Thanks to efforts made to protect it, the Mauritius echo parakeet, a bird once endangered, has seen an increase in its population. “This shows that protection methods can work,” says Marton-LefEevre. “That’s the message we want to send to young people.”

In China the new reserve（保护区）itself is part of green efforts that have seen more than 2,400 nature reserves of various kinds being set up, covering more than 15 percent of the nation's land area, official figures showed.

"The country's natural resources(资源) have benefited from conservation," said Lei Guangchun, director of the nature reserve department of Beijing Forestry University. "It is a big increase nowadays compared with other countries." Lei said.

The total areas of China’s natural reserves have covered 1.38 million km2, which accounts for 15.4% of China’s area, higher than both the world average（平均水平） of 11% and the rate in most developed countries.

Li Zhong, an official in charge of the nature reserves office with the State Forestry Administration, thought it was important to increase investment（投资） in such reserves at all levels.

1.What do we know about the IUCN?

A. A union for listing animals and plants on the earth

B. A group of volunteers who are interested in wildlife

C. An organization concerning the protection of rare species' survival

D. A government made up officials, scientists and experts

2.What can be concluded from the passage?

A. All the protection methods can’t work.   　

B. The IUCN does most of the protection.

C. The efforts China makes has paid off.　

D. Enough is done in wildlife protection.

3. Which of the following is not the cause of the disappearance of the animals?

A. Bad weather     B. Over-hunting    C. Warmer oceans    D. Habitat destruction

4.Which of the sentence is NOT true?

A. China has been paying great attention to protecting the natural resources.

B. China has set up a lot of natural reserves.

C. The natural reserves in China cover more than 15 percent of the nation's land area.

D. The rate of China's natural reserves is lower than the average of the world.

高二英语阅读理解简单题查看答案及解析

.

Sunlight and water can make plants ___________better.

高二英语单项填空简单题查看答案及解析

A society was set up to __________ the endangered animals and plant life from dying out in this area.

A. reserve　　 B. preserve

C. observe　　 D. deserve

高二英语单项填空中等难度题查看答案及解析

One day newly wedded Nancy lost her ring while helping to plant potatoes. Friends were called and the field was searched long but in vain(徒劳). Later, when the potatoes were harvested, Everyone looked out for the ring but it remained lost. Another year came round and all the farmers working in the field kept their eyes open. The following year was the same. And year after year, whoever had business in the field always had Nancy’s ring in his mind.

Then the farm changed hands but it went no farther than to cousins. So the memory of the lost ring remained alive until thirty-eight years had passed. Then came a spring day when a man was ploughing the field behind a pair of horses. Even after thirty-eight years he still looked out for the ring, and knew just which part of the field Nancy had lost it in. At this time, when he came there, he found it .He picked it up, put it carefully into his pocket, left his horse, and ran all the way down to the village and placed it into Nancy’s hand.

1.How did Nancy come to lose her ring?

A. She lost it while helping to harvest tomatoes in the field

B. She lost it while working in the field.

C. She lost it while helping to plant potatoes in the field.

D. She lost it while watering the plants in the field.

2.Why did people keep looking for the ring even after the farm changed hands?

A. They all loved Nancy.

B. They all wanted to solve the mystery.

C. It was a very expensive ring

D. Everybody wanted to have this ring.

3.What did the ploughman do after finding the ring?

A. He picked it up and put it in his pocket.

B. He ran back to tell everybody in the village.

C. He placed it in a secret spot.

D. He returned it to the owner.

4.What can you infer from the story?

A. The ring was invaluable.

B. The ring’s disappearance was the work of supernatural power.

C. People on the farm were honest and helpful.

D. Nancy no longer expected that her ring would be found again.

高二英语阅读理解中等难度题查看答案及解析