In the eyes of dog lovers, the dog is man’s b...

In the eyes of dog lovers, the dog is man’s best friend. But for much wildlife, loose dogs may be a dangerous enemy, according to a study by a biologist from Utah State University in the US.

Based on much existing research and their own case studies, Julie Smith of Utah State University and four other scientists conclude that loose dogs may represent a huge danger to wildlife, especially endangered species, by hunting down or worrying them and by spreading diseases. They also found that dogs, their worldwide numbers around 500 million, can cause more damage to wildlife and livestock(牲畜) than wolves and other enemies of these animals.

Smith gave examples from the US state of Idaho, where research showed the presence of dogs reducing some deer populations. On the Navajo American Indians’ reservation in northeastern Arizona, packs of loose dogs are attacking livestock. They have killed populations of small animals such as rabbits and act as a disease carrier for rabies(狂犬病) among people and other animals, she said. Loose dogs also were to blame for distemper(温热病) outbreak leading to a die-off of endangered black-footed ferrets in northwestern Wyoming in the 1980s.

The phenomenon is not just limited to US; it’s a global problem. Julie Smith once studied three endangered species in central Asia: wild sheep, gazelles and antelope. The rate of injury and death to these animals by loose dogs was very high. In another case, Smith found that dogs, not wolves, as originally suspected, were responsible for a large number of livestock killings in the mountainous Basque country between Spain and France.

Authors of the new study said the problem is likely to worsen as communities expand. Then how to deal with it?

Indeed, in many countries, leash(拴狗的皮带) laws permit punishment of dog owners whose pets attack wildlife. But lawbreakers are rarely punished because the police lack both people and money.

Smith has low-cost solutions to the problem for dog lovers, though. They include public dog-training programs and vaccinating (预防接种) dogs against rabies and other illnesses.

1.Julie Smith’s study mainly tells us that _______.

2.Which of the following statements about loose dogs is TRUE according to the research?

3.Which of the following is among Julie Smith’s solutions to the trouble caused by loose dogs?

4.What is the main point of the article?

高二英语阅读理解中等难度题查看答案及解析

Best friends may be priceless but the cost of keeping the relationship alive is £23,870.

According to a study, a BFF (best friends forever) does not come cheap with devoted friends spending £4,679 on birthday presents alone over a lifetime. And while it costs nothing to be a shoulder to cry on, big-hearted Britons go the extra mile and spend £168 on pick-me-ups(提神物品) to get their mate through a rocky patch (艰难时刻)like the breakup of a relationship.

There’s a further £242 spent on presents to show how much they mean from gifts bought on holiday to treats for no reason. And distance does not break up a close friendship as BFFs spend a whopping(巨大的) £18,000 on travel to see each other despite being miles apart because of university, jobs and marriage.

The study by cashback site TopCashBack found on average BEFs who marry can expect £431 spent on them and a further £283 on gifts when they have children. And they can rely on their pals to help out when they move houses as they will obtain £127 worth of housewarming presents and takeaways(a kind of food).

The survey based on a friendship lasting 40 years found more than eight in ten adults with a BFF felt their friendships were worth every penny.

TopCashback spokesperson Natasha Smith said: “Those friendships which stand the test of time are often the most important in our lives. However, they come at a cost. From train tickets once a month to flights and a new dress for a wedding on the Italian coast, the price paid for having a best mate can soon add up. But when we asked people to compare their friendship with the financial investment(投资), only 14% thought their friendship was equal to their investment with the vast majority thinking it was worth more."

1. What does the underlined word in Paragraph 2 mean?

A. generous　 　　　　　　　　 B. ambitious

C. troublesome 　　　　　　 D. energetic

2.To keep the relationship, where do BEFs spend the most money?

A. Buying birthday presents.

B. Cheering up a friend in low spirits.

C. Paying for holiday gifts and other treats.

D. Going a particular distance to visit friends.

3.What is Natasha’s understanding of BEF friendship?

A. It’s costly and unaffordable.

B. It’s expensive but worthwhile.

C. It’s rewarding but hard to keep.

D. It’s changeable but worth possessing.

4. How is the passage developed?

A. By listing figures.　

B. By giving examples.　

C. By analying causes.　　

D. By making comparisons.

高二英语阅读理解中等难度题查看答案及解析

Almost every child is scared of something, from monsters in the cupboard to dogs in the park. But the fact that such fears are common and normal doesn’t mean they can be taken lightly. Kids experience fears and phobias (恐惧症） much more strongly than adults. And the influence of the fear can be physical as well as psychological (心理的）. It can build up so they almost seem scared of everything-a kind of childhood anxiety. Dr. Creswell says: “Your child may always seem to expect the worst to happen and lack confidence as they grow up.” So don’t make the same old mistake of treating them as if they’re silly for being a “scared cat”. Handling the fears is essential.

Children can be born nervous and if you have such a baby, you’ll tend to prevent them from getting worried. So if they fear dogs, You’ll keep them away from dogs, but in fact that can just confirm to the child that dogs are scary. What is worse, keeping your child away from what they fear can turn that feeling into a phobia. Instead, you should encourage them to get in touch with the thing they fear, in a safe and supportive environment. Dr. Andy Field, a researcher of childhood fears, says: “You shouldn’t force, for example, an anxious child to go up to a dog. But you can approach it yourself, show them there is nothing to be afraid of, stroke (抚摸） it, and talk about the dog being friendly. Once your child dares to stroke a dog-one that’s good with children, of course-then you should encourage them to carry on until they feel calmer, and reward them for‘being brave’.”

1.Children’s fears are usually taken lightly because　 ________ .

A. they will not develop into phobias　　 B. their influence is psychological

C. they exist widely in the world　　 D. they will disappear gradually

2.If we fail to help children to overcome fears, they will　　 .

A. make the same old mistake　　 B. overcome them by themselves

C. experience the worst of things　　 D. grow up lacking self-confidence

3.According to Dr. Andy Field, if a child is afraid of a cat, parents should　 ________ .

A. tell the child not to be afraid of it　　 B. show the child it’s safe to approach it

C. keep the child away from it　　 D. ask the child to stroke it

高二英语阅读理解困难题查看答案及解析

Almost every child is scared of something, from monsters in the cupboard to dogs in the park. But the fact that such fears are common and normal doesn’t mean they can be taken lightly. Kids experience fears and phobias(恐惧症) much more strongly than adults. And the influence of the fear can be physical as well as psychological (心理的). It can build up so they almost seem scared of everything--a kind of childhood anxiety. Dr. Creswell says: “Your child may always seem to expect the worst to happen and lack confidence in his or her ability to deal with any challenge.” So don’t make the same old mistake of treating them as if they’re silly for being a“scaredy cat”. Handling the fears is essential.

Children can be born nervous and, if you have such a baby, you’ll tend to prevent them from getting worried. So if they fear dogs, you’ll keep them away from dogs, but in fact that can just confirm to the child that dogs are scary. What is worse, keeping your child away from what they fear can turn that feeling into a phobia. Instead, you should encourage them to get in touch with the thing they fear, in a safe and supportive environment. Dr. Andy Field, a researcher of childhood fears, says: “You shouldn’t force, for example, a dog anxious child to go up to a dog. But you can approach it yourself, show them there is nothing to be afraid of, stroke( 抚摸) it, and talk about the dog being friendly. Once your child dares to stroke a dog-one that’s good with children, of course---then you should encourage them to carry on until they feel calmer, and reward them for‘being brave’.”

1.Children’s fears are usually taken lightly because________.

A．they will not develop into phobias

B．their influence is psychological

C．they exist widely in the world

D．they will disappear gradually

2.If we fail to help children to overcome fears, they will________.

A．make the same old mistake

B．overcome them by themselves

C．experience the worst of things

D．grow up lacking self-confidence

3.According to Dr. Andy Field, if a child is afraid of a cat, parents should________.

A．tell the child not to be afraid of it

B．show the child how to approach it

C．keep the child away from it

D．ask the child to stroke it

高二英语阅读理解中等难度题查看答案及解析

My best friend is Cocoa, and I live in a senior-citizen apartment. Cocoa is a ten-year-old dog and I am a sixty-nine-year-old lady, so you can see we both qualify as 1  citizens.

He is a 2  companion. He does many amusing things that make me 3 , and when that happens, he is so delighted 4  he just keeps it up.

But one afternoon, Cocoa started acting strangely. I was sitting on the floor playing with him, 5  he started pawing and smelling at the right side of my 6 . He had never done anything like this ever before, and I told him, “No.” To Cocoa, one “no” is usually 7 , but not that day. He stopped briefly, and then 8  ran toward me, throwing his entire weight at the right side of my chest. He crashed into me and I cried in 9 , falling down to the floor. Soon after this, I felt a lump (肿块). I went to my doctors, and after X-rays 10  and lab work were done, they told me I had cancer.

When cancer starts, a 11  of calcium (钙) builds. Then the lump or cancer attaches itself to this wall. When Cocoa jumped on me, the force of the impact broke the lump away from the wall. This made it possible for me to 12  the lump.

I had a complete mastectomy (乳房切除术) and the cancer has not 13  to any other part of my body. The doctors told me if the cancer had gone undetected even six more months, it would have been too 14 .

Was Cocoa 15  of just what he was doing? I’ll never really know. What I do know is that Cocoa not only shares his life with me, he has also made sure that I will be around to share my life with him!

1.A. good               B. standard     C. senior           D. great

2. A. wonderful     B. tiring           C. hungry       D. bad

3. A. leave         B. cry          C. laugh            D. jump

4.A. as             B. when             C. and          D. that

5.A. when           B. then         C. though           D. as

6. A. chest         B. body         C. shoulder     D. arm

7. A. right         B. good         C. enough       D. unexpected

8. A. hurriedly         B. rudely           C. slowly   D.suddenly

9. A. pain              B. surprise     C. trouble  D.danger

10. A. experiments      B. researches       C. tests    D.papers

11. A. wall         B. cancer           C. body         D. number

12. A. watch            B. have         C. get          D. notice

13. A. ran              B. kept         C. entered      D. spread

14. A. common       B. late         C. much         D. early

15. A. ashamed      B. aware            C. afraid           D. tired

高二英语完型填空简单题查看答案及解析

Why is it that you can remember the name of your childhood best friend that you haven't seen in years yet easily forget the name of a person you just met a moment ago？In other words, why are some memories stable over decades, while others disappear within minutes？

Caltech researchers carried out their work about memories in the laboratory. The research team developed a test to examine mice's neural（神经的）activity as they learn about and remember a new place. In the test, a mouse was placed in a straight enclosure( 围 场 ), about 5 feet long with white walls. Unique symbols marked different locations along the walls. Sugar water（a treat for mice）was placed at either end of the track.

When a mouse was placed in the track, it was unsure of what to do at first and wandered left and right until it came across the sugar water. In these cases, single neurons were activated when the mouse took notice of a symbol on the wall. Over numerous experiences with the track, the mouse became familiar with it and remembered the locations of the sugar water. As the mouse became more familiar, more and more neurons were activated when seeing each symbol on the wall. Essentially, the mouse was recognizing where it was with respect to each unique symbol.

To study how memories disappear over time, the researchers then kept back the mice from the track for up to 20 days. Upon returning to the track after this break, mice that had formed strong memories encoded（编码）by higher numbers of neurons remembered the task quickly. Even though some neurons showed different activity, the mouse's memory of the track was clearly identifiable when researchers analyzed the activity of large groups of neurons.

This work shows that memories might disappear more rapidly as we age because a memory is encoded by fewer neurons, and if any of these neurons fail, the memory will be lost. The study suggests that one day, designing treatments that could encourage a higher number of neurons to encode a memory could help prevent memory loss.

1.What is the purpose of the first paragraph?

A.To introduce the topic of the text.

B.To show the examples of bad memory.

C.To compare different people's memories.

D.To prove the importance of childhood memories.

2.During the research, the mouse _______

A.lost interest in the symbols soon

B.had to climb over the long white wall

C.would get sugar water as their rewards

D.wandered left and right nervously all the time

3.What is special about the mice that remembered the task quickly after the break?

A.They had their neurons show different activity.

B.They love sugar water better than other mice.

C.They stayed in the track for over 20 days.

D.They possessed more activated neurons.

4.What does the last paragraph imply?

A.Mice's memory seems better than humans

B.The aging process of humans is unavoidable.

C.Memory loss is expected to be cured in the future.

D.The study has found the way to prevent neurons from failing.

高二英语阅读理解中等难度题查看答案及解析

Dogs are generally called “man's best friend”. They are loyal, funny and loving. They seldom complain and always obey their owners. People who have dogs seem to be happier and healthier than those who live alone. One reason for this is that people with dogs lead more active lives. Who can say no to a lovely dog when he pulls on your arm and asks you to take him for a walk?

Dogs are really amazing animals. They not only provide great help for humans but also offer emotional support. Think about guide dogs for blind people, or dogs that help people in wheelchairs.

However, it is the emotional side of owning a dog that has been studied in detail by Dr Julie Davis of Chicago University. I have interviewed office workers and farmers, policemen and construction workers," says Dr Davis. Everyone wants to talk about their dogs. Many people said they cried much more when their dogs died than when their parents did. They said the sadness was much deeper. People tell me all the time that they get more emotional support from their dogs than they do from their husbands or wives."

1.What is the dog regarded as? (No more than 3 words)

2.Why do people with pet dogs seem happier and healthier than those having no dogs? (No more than 8 words)

3.Why does the writer think dogs are amazing animals? (No more than 11 words)

4.What can be concluded from Dr. Davis’ interview? (No more than 10 words)

高二英语其他题困难题查看答案及解析

Dogs are man’s best friends---they are very good for children’s health. Researchers found that family pets helped to protect babies against breathing problems and infections (感染).

A team from Kuopio University Hospital in Finland studied 397 babies born at their hospital between September 2012 and May 2015 for their first year. They found that babies who lived with a dog or a cat spent fewer weeks with ear infections, coughs or runny noses. They were also less likely to need antibiotics (抗生素) than babies in homes without a pet.

Study author, Dr. Eija Bergroth, said dogs brought dirt and bacteria (细菌) into the home, which helped children’s immune system (免疫系统) to be strong. This improved their defenses against bacteria.

As part of the study, parents filled out weekly diaries starting when the children were nine weeks old, recording information on babies’ health as well as their contact with cats and dogs. They recorded if they had fever, ear infections, coughs or running noses. They also put down whether they needed antibiotics.

Based on those diaries, the researchers found that about a third of the children spent most of their first year with a pet dog and 24 percent in a home with a cat. And children with no dog contact at home were healthy for 65 percent of the time, compared to between 72 and 76 percent for those who did have a pet.

The researchers also found that contact with dogs, more than cats, was tied to fewer weeks of sickness for babies.

However, the researchers said they couldn’t rule out the possibility that people who own dogs are less likely to get sick for another reason, not due to any protection offered by pets.

1.The researchers studied each child’s life ____.

A. for a year

B. for three years

C. for four years

D. all through childhood

2.How are dogs able to benefit children?

A. By fighting bacteria.

B. By stopping them from going out.

C. By strengthening their immune system.

D. By producing the antibiotics they need.

3.What do the underlined words, “rule out”, in the last paragraph probably mean?

A. Determine.　　 B. Separate.

C. Control.　　 D. Ignore.

4.We can learn from the text that ___.

A. dogs are very friendly towards people.

B. dogs are better for babies’ health than cats.

C. dogs have the most benefits for man.

D. dogs are free from antibiotics.

高二英语阅读理解中等难度题查看答案及解析

Is your family interested in buying a dog? A dog can be a good friend to your family, but if you choose the wrong kind of dog, it can cause you a lot of trouble.

Families should sit down and discuss the problems before buying a dog．Even if the children in your family are the ones who want the dog，the parents are the ones who are really responsible(有责任的) for seeing that the animal is properly cared for．If you don’t know much about dogs，it’s a good idea to go to the library for books about different kinds of dogs，as well as books about how to train a young dog. Dogs of different kinds change in popularity as the years go by. One of the most popular dogs these days is the German shepherd(牧羊犬). This is because it provides protection. The family should be warned that these dogs grow up to be very big, and may he too powerful for children, If your house is not big, a toy dog may be a good choice(选择). These dogs are very small and easy to train. They don’t need to be walked daily.

1.According to the passage, who should take care of the dog?

A. Children.　　　 B. Parents.　　　　

C. Family.　　　　 D. Friends.

2.The writer suggests one can get information about the different kinds of dogs　　　　　　　 .

A. by reading books about dogs　　　　　　　　　　

B. by buying a dog from a pet shop

C. by watching dogs in a zoo　　　　　　　　　　　　

D. by asking some friends

3.The passage is mainly about　　　　　　 .

A. how to take care of dogs　　　　　　　　　　　　

B. different kinds of books about dogs

C. how to choose the right dogs for family pets　　

D. different kinds of dogs

高二英语阅读理解中等难度题查看答案及解析

Reading books is one of the best hobbies. It not only helps you pass your time but also helps you increase your knowledge in a meaningful manner. 1. Here we will give you a few tips that can help you.

● Fall into the habit of borrowing books to read.

This is a very old school practice but still it can be highly effective (有效的). When you borrow a book, there is obviously a deadline (期限) set. 2.

● Read everywhere.

Keep a book in your bag and read it anywhere you go. This will help you to pass your time in a very productive manner. 3. Anyway, you can read your book 24 hours a day.

●4.

This can easily be described as a new school technique. You can read out to your brother or sister and this will enable you to finish your book as well as increase the knowledge and understanding of your brother or sister.

● Choose your books very carefully.

5. Thus choose your books very carefully in order to enjoy your time and also finish your book effectively. If you choose a good book that can keep you interested for a longer period of time, there is no way that you are going to leave it incomplete.

A. Read out to someone else.

B. Realize the importance of reading books.

C. Therefore, it is necessary to develop the reading habit.

D. Find an excuse to read every day just by visiting book clubs.

E. Yes, life is too short to read a book that doesn’t impress you.

F. It doesn’t matter whether you are traveling or are about to sleep.

G. This can encourage you to read it often to finish the book on time.

高二英语七选五中等难度题查看答案及解析