Many students today suffer from ________ prob...

Many students today suffer from ________ problems, since they are under too much pressure.

A. recreation-related B. pollution-related

C. stress-related　 D. pollution-free

高二英语单项填空中等难度题查看答案及解析

Many students today suffer from ________ problems, since they are under too much pressure.

A. recreation-related　 B. pollution-related

C. stress-related　 D. pollution-free

高二英语单项填空简单题查看答案及解析

Heart disease is one of the major killers in the world today. Many who suffer from it must have heart transplants. However, it’s difficult to get a suitable heart donation, and even if a patient survives the wait, his or her body often rejects the heart.

But there is now new hope for sufferers of heart disease. According to a study published in the journal Advanced Science, researchers from Israel’s Tel Aviv University printed a 3D human heart on April 15.

“This is the first time anyone anywhere has successfully engineered and printed an entire heart,” professor Tal Dvir told CNN. Unlike the previous 3D-printed heart structure, the new heart is complete with cells, blood vessels, chambers and other structures a heart needs to function normally. But scientists still have more to figure out before the 3D-printed heart can be fitted into the body. For one thing, the experimental heart is only the size of a thumb. And, although it can contract like a muscle, it cannot pump out blood like a real one. At present, the heart prototype is like a tiny airplane that has all of the right parts, but can’t fly.

However, the development is still regarded as a major breakthrough in medicine.

In the experiment, the researchers turned human fat tissue into human heart tissue with stem cell technology. The tissue was then turned into “bio-ink” for a 3D printer to ensure that tissue in the heart came from the patients themselves. So ideally, if it were to be placed in the body of someone in need of a transplant, there would be less risk of organ rejection. “Patients will no longer have to wait for transplants or take medications to prevent their rejection,” researchers told USA Today. “Instead, the needed heart　 will be printed, fully personalized for every patient.”

But the scientists think that 3D printing can be used to create other human organs. They foresee a time when the 3D printing of organs will be an everyday medical practice. “Maybe, in 10 years, there will be organ printers in the finest hospitals around the world and these procedures will be conducted routinely,” Dvir said.

1.Why do scientists have to do further research before fitting the 3D-printed heart into the body?

A.Because the heart is incomplete.

B.Because the heart can’t pump out blood.

C.Because the heart is an airplane that can’t fly.

D.Because the heart can’t contract like a muscle.

2.What can we infer from the last two paragraphs?

A.The needed heart will be printed to meet every patient’s need.

B.The 3D printing of organs will be an unusual medical practice.

C.Dvir has a negative attitude towards the future of organ printers.

D.Patients will need medicines to stop their rejection for their heart transplant.

3.What can serve as the best title for the passage?

A.Organ printers in the hospitals.

B.How to get a suitable heart donation.

C.Heart disease: one of the major killers.

D.A 3D-printed heart: new hope for heart disease sufferers.

高二英语阅读理解简单题查看答案及解析

Many students_______ from the new library since it was open to all.

A. benefited                             B. were benefited

C. have been benefited         D. have benefited

高二英语单项填空中等难度题查看答案及解析

The discovery of the new drug is of great _______ for people suffering from heart problems.

A.similarity B.sympathy C.subscribe D.significance

高二英语单项填空简单题查看答案及解析

There are many “forced riders”，who are suffering from the climate impacts_____ having scarcely contributed to the problem.

A.when B.though C.despite D.as

高二英语单项填空中等难度题查看答案及解析

Animals are a great way to combat the struggles experienced by many people suffering from a mental illness, especially depression.

Having a pet is a big responsibility but it is_______ these responsibilities that we develop a relationship with the _______, just like children, become accustomed to routines. They become_______them and can oftentimes lose their cool if the routine is _______. Once a routine of care is established, nurturing(养育）our pet becomes second _______. In learning to care for our animals we ________routines for ourselves. It may _______deciding when the dog will be_______for a walk, but then we have to fit in shopping, getting to the gym, etc. based on the _______we have left. Having a routine gives us a sense of ________that we often feel gets lost when suffering from a mental health illness.

________we nurture and care for our pet, we simultaneously nurture and care for ourselves. ________, having a dog will get you outside, walking, running or just being ________. Exercise has time and time again been shown to help with depression and other ________ illnesses. It can be ________ to convince ourselves to get up for a walk simply to make ourselves feel better, but when we have a(n) ________to our pets we are more likely to do it.

While owning a pet is no ________task, the benefits can seriously outweigh the ________. If you are struggling with your mental illness, keeping a pet might just ________. Imagine the love when you feel when arriving home to see your dog waiting ________at the door. Not only do we love and care for our pets, they unconditionally love us as well.

1.A. from　　 B. under　　 C. through　　 D. towards

2.A. child　　 B. animal　　 C. owner　　 D. illness

3.A. tired of　　 B. interested in　　 C. dependent on　　 D. worried about

4.A. found　　 B. followed　　 C. understood　　 D. broken

5.A. task　　 B. nature　　 C. life　　 D. thought

6.A. change　　 B. give up　　 C. create　　 D. show off

7.A. start with　　 B. finish　　 C. deal with　　 D. avoid

8.A. allowed　　 B. carried　　 C. asked　　 D. taken

9.A. time　　 B. money　　 C. energy　　 D. thing

10.A. control　　 B. anxiety　　 C. pride　　 D. guilt

11.A. Since　　 B. Unless　　 C. As　　 D. Though

12.A. As a result　　 B. In addition　　 C. After all　　 D. For example

13.A. healthy　　 B. active　　 C. quiet　　 D. happy

14.A. mental　　 B. serious　　 C. normal　　 D. physical

15.A. fun　　 B. confusing　　 C. hard　　 D. reasonable

16.A. attitude　　 B. promise　　 C. attention　　 D. responsibility

17.A. simple　　 B. great　　 C. usual　　 D. important

18.A. purpose　　 B. effects　　 C. costs　　 D. results

19.A. help　　 B. stop　　 C. see　　 D. try

20.A. nervously　　 B. patiently　　 C. aimlessly　　 D. hurriedly

高二英语完形填空困难题查看答案及解析

Ever since man began to use the telephone, there have been new problems arising from the carrying of messages. At first, each message was carried by a pair of overhead wires. As a result, telephone exchanges were soon surrounded by thousands of wires. The wires were then replaced by cables (电缆)，each containing many pairs of wires. Each cable is capable of carrying many messages. These cables, laid underground, replaced the overhead wires.

The more extensive telephone services have become, the more demand for these services has increased, particularly the demand for long-distance services. In China, for example, this growth is now over 30% every year. Long-distance telephone exchanges are usually in crowded cities, where is not easy to lay new labels for expanding services.

The use of radio to send telephone message and to link all telephone exchanges makes it possible to get rid of overhead wires and some underground cables.

Now man has invented the microwave system ( 微波系统 ). In a microwave system messages from various places can be brought together, and then they are sent out and received by radio. After that, the messages are split into their original form. Finally, they are sent to the places where they are going to be sent.

1.The word “message” ( in paragraph 1) is close in meaning to “______”.

A. electricity     B. industry     C. information    D. wave

2.A cable is different from an overhead wire, because it ________.

A. is made of wood

B. needs more exchange

C. carries more messages

D. is much longer

3.What does the word extensive mean？

A. growing       B. using       C. holding     D. understanding

4.The best title for the passage would be “________”.

A. The Telephone and Its Past

B. From the Wire to the Microwave System

C. The Needs for Better Telephones

D. How to Use the Telephone

高二英语阅读理解中等难度题查看答案及解析

Many experts are calling the growing problem of global waste a worldwide health crisis in since pollution from trash is not only harming the world’s oceans, air and soil but also endangering people’s health as well as the livelihood of all living creatures.

Reduce, reuse, recycle

Such a dilemma raises the question, is there a more responsible way of dealing with trash? Fortunately, there is. 1.One example of this is what’s often called the three Rs: reduce, reuse, recycle. Reducing the use of plastic containers as well as reusing and recycling bottles and cans decreases the amount of garbage being sent to landfills. As a result, less money is spent on waste management, and countries’ financial burdens are significantly relieved. Such positive effects on an economy are known as a circular economy.

Circular economy

Traditionally, manufacturers would make a product to be used and disposed of by consumers. This linear (直线型的) model of production offered no help in the fight against global waste. 2..

Once a product’s value is exhausted, the materials are recycled and returned to manufacturers. The outcome is less waste. One large-scale example of this is happening on the island of Taiwan.

3.

In 1997, Taiwan established its signature 4-in-1 Recycling Program, consisting of communities, government cleaning teams, recycling companies and the Recycling Fund. Residents separate their recyclable waste. The local government collection teams collect it.4.. Importers and manufacturers who are responsible for the recyclable products pay a fee into the Recycling Fund. The Recycling Fund is an essential aspect of the program used to subsidize (补贴) the recycling disposal system, support education and research and development as well as finance recycling efforts in the future.

Turning garbage into gold

By following a circular system, more products than ever are being manufactured using recycled materials. Environmentally-friendly decisions like these help to conserve natural resources, reduce pollution, save landfill space and even create new job opportunities. 5..

A.Practices in Taiwan

B.4-in-1 Recycling Program

C.Recycling can truly turn garbage into gold

D.Living a zero-waste lifestyle is the way to go

E.Alternatively, a circular economy was introduced

F.The recyclable waste is recycled in many local factories

G.Recycling companies buy waste materials from them to make profits

高二英语七选五中等难度题查看答案及解析

.Since we have failed many times, why not take  a new _________to solving the problem?

高二英语单项填空简单题查看答案及解析