All d______(捐献) blood is tested for HIV and o...

All d______(捐献) blood is tested for HIV and other infections. (根据汉语意思及首字母完成句子)

高一英语根据汉语意思填空中等难度题查看答案及解析

Cancer is a leading cause of death around the world. When it comes to cancer, the sooner you know you have it, the better your chances of surviving. A new blood test could change the way doctors and researchers find cancer in patients. Researchers say the test could provide evidence to the early forms of the disease.

Scientists at Swansea University in Wales came up with the idea. Gareth Jenkins is a professor at the university. “ In this blood test we don’t measure the presence of cancer; we measure the presence of mutant red blood cells which are collateral(附属的) damage that occurs---a by-product of the cancer developing.”

The researchers used normal laboratory equipment to perform the test. This equipment looks for changes in the structure of millions of red blood cells. Those mutant cells lack a surface protein that healthy cells normally have. “The main purpose of the test is to look for very rare cells which have picked up a mutation. The number of mutant red blood cells in a healthy person is around 5 or so per million. You have to look at millions of red blood cells to detect those rare events. These numbers increase in cancer patients---they go up to 40 or 50 mutants on average.”

The researchers tested blood from about 300 people, all of whom have cancer of the esophagus(食道). Patients with esophageal cancer have high levels of mutant red blood cells. Jenkins says that at this point he is not sure if other cancers will produce similar results.

The hope is that the new test and other non-invasive methods could one day become part of commonly used medical methods. He says that using a battery, or series, of tests will be the best way to find out if a person has cancer. These new technologies could save millions of lives.

1.According to the test, how do scientists find out if a person has cancer?

A.By calculating the speed of changes in the structure.

B.By observing the surface protein.

C.By looking for changes in the number of mutant red blood cells.

D.By measuring the presence of cancer.

2.What does the underlined word “mutant” in the 3rd paragraph mean?

A.Decreased. B.Changed. C.Increased. D.Multiplied.

3.The author adopts a/an 　　　　 tone in the passage.

A.humorous B.favorable C.critical D.objective

4.In which section of a website can you most probably find the passage?

A.Health. B.Fashion. C.Education. D.Culture.

高一英语阅读选择中等难度题查看答案及解析

When we donate（捐献） blood, a small amount is usually taken in advance for at least ABO and Rh systems typing. If you are O+, the O is your ABO type and the + is your Rh type. It is possible to be A, B, AB, or O as well as Rh + or Rh-.

The ABO system was discovered by Karl Landsteiner in the early 1900s. He was awarded the Nobel Prize for his achievements. There are four basic types of blood in the ABO system: A, B, AB and O. Everybody is born with one of these four types of blood. We get blood type, just like hair color and height from parents. Because of the substances(物质) contained in each type, the four groups must be transfused carefully, If two different blood types are mixed together, it may put a person into an extremely dangerous situation. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. In an emergency, type O blood can be given because it is most likely to be accepted by all blood types, so it is often called the universal donor. However, there is still a risk. For the opposite reason, AB is sometimes called the universal receiver. However, because there can be so many reactions in the blood bank of the hospital.

There is a relationship between your blood type and your nationality. Among the Europeans, about 45 percent have type O while 42 percent have type A. The least common is type AB. Other races have different percentage. For example, some American Indian groups have nearly 100 percent type O out of 100 donors in the world.

1.Which of the following shown the correct relationships in blood transfusions?

2.The underlined word “transfuse” most probably means ________.

A. to put the blood into a container

B. to move the blood from one place to another

C. to put the blood of one person into the body of another

D. to give power to another person

3.The writer suggests that the third most common blood type among the Europeans is ______.

A. B　　　　　　　 B. A　　　　　　　　 C. AB　　　　　　 D. O

4.The text mainly tells us ______.

A. about the basic types of human blood

B. what kind of blood is the most common

C. about Karl Landsteiner who won the Nobel Prize

D. the relationship between blood type and nationality

高一英语阅读理解中等难度题查看答案及解析

Tech giants Apple and Google are teaming up to create a system that would let smart phone users know when they've come into contact with someone who has COVID-19.

The technology would rely on the Bluetooth signals that smart phones can both send out and receive 1aperscn tests positive(阳性) for COVID-19, they could inform public health authorities through an app. Those public health apps would then warn anyone whose smart phones bad come tear the infected person's phone in the previous 14 days. The technology could be used on both Google Android phones and Apple iPhones.

The companies insist that they will preserve smart phone users' privacy and their technology will be used only by public health authorities to trace the spread of COVID-19. Smart phone users can choose to use it. The software will not collect data on users' physical locations or their personally identifiable information. People who test positive would remain unknown to the public, both to the people who came in contact with them and to Apple and Google. “Privacy is of greatest importance in this effort,” the companies said in a joint statement.

The American Civil Liberties Union has warmed that using cellphone data to handle the pandemic carries risks of “destruction of privacy”. In a statement on Friday, ACLU cyber security counsel Jennifer Granick said, The system also can't work well if people don’t trust it”. She said that the joint Apple and Google project “appears to reduce the worst privacy risks, but there is still room for improvement.” She added that the contact tracing app should be used only for public health purposes and only for the duration of this pandemic.

Public health officials say the contact tracing -finding people who have been in contact with an infected person will be a key step in lifting shelter in-place restrictions.

It would allow people who are known to have been exposed to the virus to isolate themselves, while letting others recover normal activities.

1.What is the main purpose of the passage?

A.To advertise for public health. B.To introduce a contact tracing system.

C.To warn the public of risks of COVID-19. D.To raise people's awareness of privacy protection.

2.What do the companies promise to do in particular?

A.Warn people who test positive. B.Protect infected people's privacy.

C.Work with public health authorities. D.Collect data on users physical locations.

3.What does the underlined sentence in Paragraph 4 suggest?

A.Public health issues are traced accurately. B.Only people's trust influences the system.

C.The system is at the risk of being destroyed. D.Jennifer thinks the system should be better.

4.The system is mainly designed to 　　 .

A.ensure infected people's recovery B.guarantee people's normal activities

C.help prevent the spread of COVID-19 D.encourage all the people to isolate themselves

高一英语阅读选择中等难度题查看答案及解析

Imagine that you are in a remote village somewhere with no medical clinic. 1.Once the doctors get to you, they examine you and take blood samples, but they won't be able to help you until they take the samples back to the hospital to find out what is wrong.2. Thanks to engineer Andy Ozcan, many people may never be in this situation. He has invented an app that turns your mobile phone into a diagnostic(诊断的)tool.

Ozcan's invention is important because it is very accurate and easy to use. In many remote places, even if doctors have microscopes and other instruments to help them make diagnoses, there may still be other problems. Many doctors, for example, don’t have enough training to correctly interpret what they see.3.With Ozcan's mobile phone app, health workers can take a special photo of a blood sample and send it to a central computer at a hospital. The computer will then automatically interpret the photo and send a diagnosis back in a few minutes.

4.His technology only requires a mobile phone and an Internet connection. As more than four billion people already have cell phones, the cost of establishing the diagnostic system is fairly low.

By inventing a medical tool that uses existing technology---mobile phones---Ozcan has developed a medical tool that is both practical and economical. Therefore, it can be effectively almost anywhere.5.

A.Another reason that Ozcan's invention is important is that it is inexpensive.

B.Even though you may only have a simple infection (感染), you might die because of the delay.

C.People are trying to reduce the cost of this new medical tool.

D.Ozcan's simple, cost-effective tool might just save millions of lives around the world.

E.This tool has become much more popular all around the world.

F.You become very sick and must wait days until a mobile medical unit arrives to help.

G.As a result, they may diagnose illnesses incorrectly.

高一英语七选五困难题查看答案及解析

For a long time, the smartwatch industry had just a few big companies that could set any prices they wanted and kept cheating customers. But now one new tech company is turning the $5 billion smartwatch industry on its head. The company called OshenWatch has found a way to offer a far advanced product at a part of the original price.

Let’s meet the OshenWatch. OshenWatch combines the functions of a fitness band （手环）， digital watch, and health monitor all into one. It feels comfortable to wear. Even better than some of the expensive smartwatches I own from other big tech companies. Extreme indoor and outdoor sports? No problem, the hardened aluminum shell （铝壳）and the lowered-temperature touchscreen glass won't break easily even if you tried.

In my opinion, the OshenWatch is the next generation of smartwatches. Take calls, sleep monitoring, show incoming messages, etc…The watch has all the basic functions that a good smartwatch must have and much more.

What makes the OshenWatch so popular? The green laser （激光）behind the watch is the secret! It is the heart rate monitoring function. This watch lets you measure your blood pressure, heart rate, blood oxygen level, calculate your beats per minute. Give you extremely important time to catch problems early, and seek medical help before it's too late.

This is the reason why the OshenWatch will be the best-selling smartwatch of 2020. No other watch is that advanced. It could actually save your life one day!

1.What is the advantage of the OshenWatch?

A.Its price is the lowest. B.It has various functions.

C.It is made of aluminum. D.It can lower the temperature.

2.Which of the following can be measured by the OshenWatch?

①blood pressure②blood sugar level　　 ③heart rate　　 ④blood oxygen level

⑤eye pressure

A.①③④ B.②③④ C.①②⑤ D.②③⑤

3.Where is this text most likely from?

A.A diary. B.A guidebook. C.A novel. D.A magazine.

高一英语阅读选择中等难度题查看答案及解析

The SAT is one of two major tests for the entrance to American colleges and universities. The other test is called the ACT. More than 2 million students take the SAT yearly, including about 100,000 foreign students. The organization of the SAT will change the entrance test in 2016. The College Board announced that the new SAT will no longer test students on rarely used words. But it will include passages from American historical documents or from writings on freedom and human rights.

The College Board says words on the new test will be related to usage. Students will be asked to tell the meaning of words according to the context of the reading passages. Nigerian student Peace Umoru is in her first year at Howard University. She says the rarely used words are the hardest part for international students. The new test will be easier because of the reform.

Eddie West is with the College Board. He says the new test will better predict a student’s performance in college. The changes are moving the test in a positive direction. The new SAT pays more attention to skills and abilities that students need to succeed. The addition of material about American historical documents could make the test harder for international students. After all, they live in different countries with different cultures. But it’s a good chance for them to understand the Declaration of Independence or Martin Luther King’s work, or anything else that might be tested.

Students from other countries, particularly those who did not grow up learning English, may feel it is more difficult. For them, the test is in a foreign language. But the College Board says it has formed a free, online educational service. Khan Academy will provide preparation material linked to the newly designed SAT.

1.What will be tested in the new SAT?

A. All the different meanings of a word.

B. The rare usage of the common words.

C. The difficult words for foreign students.

D. The proper meaning of the words in the passages.

2.The new SAT could be more difficult for international students because 　　 　　 .

A. they are short of skills and abilities

B. they often perform badly in college

C. they know nothing about American history

D. they have different cultural backgrounds

3.What’s the main idea of the text?

A. How to prepare for the new SAT.

B. The SAT will change the entrance test in 2016.

C. Advice for foreign students on passing the SAT.

D. Tests for entrance to American colleges and universities.

高一英语阅读理解中等难度题查看答案及解析

Chinese researchers have developed a robot designed to help doctors treat the new coronavirus and other highly contagious (传染的)diseases.

The machine has a long robotic arm attached to a base with wheels. It can perform some of the same medical examination tasks as doctors. For example, the device can listen to sounds made by patients'hearts and lungs.

Cameras record the robot's activities, which are controlled at a distance so doctors can avoid coming in close contact with infected patients. Doctors and other medical workers can run the machine from a nearby room, or from much farther away.

The robot's main designer is Zheng Gangtie, an engineer and professor at China's Tsinghua University in Beijing. He told Reuters news agency that he got the idea for the machine when the number of cases of the COVID-19 virus was rising quickly in the city of Wuhan.

One of Zheng's friends, head of Bering's Tsinghua Changgung Hospital, told him that one of the biggest problems in dealing with COVID-19 was that healthcare workers treating patients were getting themselves infected. Zheng said he wanted to do something to help this situation.

So the engineer gathered a team and went to work on the robot. Zheng said the team was able to change two robotic arms. The new robot is almost completely automated (自动化的), Zheng said. It can even disinfect itself after performing actions involving patient contact.

"Doctors are all very brave," Zheng told Reuters. "But this virus is just too contagious…We can use robots to perform the most dangerous tasks."

However, Zheng said he had heard from some doctors that it would be better not to build such robots. This is because many patients still desire a personal presence to help calm them during treatment.

The team now has two robots and both have been tested by doctors at hospitals in Beijing. One machine was once taken to Wuhan's Union Hospital, where doctors there were trained to use it.

Zheng would like to build more of the robots, but money from the university has run out, each robot costs about$72,000 to make. He does not plan to commercialize the design, but hopes that a company can begin that process.

1.What are Paragraph 4 and 5 mainly about?

A.When the robot was designed. B.How the robot is controlled.

C.Who the robot is intended for. D.Why the robot was invented.

2.The underlined word"disinfect"in Paragraph 6 most probably means _____.

A.clean B.destroy C.decorate D.break

3.What difficulty is Zhang Gangtie faced with?

A.Patients refusing to use the new robot.

B.Healthcare workers getting themselves infected.

C.Being short of money to produce more of the robots.

D.Having no teammates to commercialize the design.

4.Which of the following might be the best title of the passage?

A.Doctors are Fighting against Coronavirus

B.Coronavirus is Under Control in China

C.Chinese Robot is Invented to Replace Doctors to Cure Diseases

D.Chinese Robot is Designed to Help Doctors Fight Coronavirus

高一英语阅读选择中等难度题查看答案及解析

Crossing your legs is an extremely common habit; most people don’t even notice that they’re doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason is that the blood in your legs has to work against gravity to be pumped back to your heart and that crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won’t feel any immediate effects, but repeated, drawn-out increases in blood pressure can cause long term health problems. So, panning to sit for a long period of time? Don’t keep your legs crossed.

Crossing your legs at the knee can also cause pressure on the major nerve in your leg that passes just below your knee and along the outside of your leg, explains Richard Graves, a medical expert. This pressure can cause numbness and temporary paralysis of some of the muscles in your foot and leg, preventing you from being able to raise your ankle. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.What can we learn about crossing one’s legs?

A.It is a very bad social habit. B.It is usually practiced by design.

C.It can make others feel uncomfortable. D.It has a negative effect on people’s heath.

2.We may conclude from the study that sitting with your legs crossed can ________.

A.improve the function of legs B.help your blood resist gravity

C.effect your blood pressure D.cause health problems instantly

3.According to Richard Graves, repeatedly crossing your legs may ________.

A.paralyze all of your muscles B.preventing you from standing up

C.damage your nerve in the leg in the end D.reduce the pressure on the major nerve

4.What is the main purpose of the text?

A.To blame a bad habit. B.To provide suggestions.

C.To introduce research methods. D.To show effects of an experiment.

高一英语阅读选择中等难度题查看答案及解析

October 15th is the Global Hand washing Day. Activities are planned in more than 20 countries to get millions of people in the developing world to wash their hands with soap. For example，donors(捐赠者) will give 150，000 bars of soap to schools in Ethiopia.

Experts say people around the world wash their hands every day, but very few use soap at so-called important moments. These include after using the toilet, after cleaning a baby and before touching food.

Global Hand washing Day is the idea of the Public-Private Partnership for hand washing with soap. Partners include the United Nations Children's Fund, American government agencies, the World Bank and soap makers Unlever and Procter and Gamble. The organizers say all soaps are equally effective at removing disease-causing germ(细菌). They say the correct way to wash is to wet your hands with a small amount of water and cover them with soap. Rub(揉搓) it into all areas, including under the fingernails(指甲). Rub for at least twenty seconds. Then rinse well under running water. Finally, dry your hands with a clean cloth or wave them in the air.

The Partnership for Hand washing says soap is important because it increases the time that people spend in washing hands. Soap also helps to break up the dirt that holds most of the germs. And it usually leaves a pleasant smell. The Partnership for Hand washing also says washing with soap before eating or after using the toilet could save more lives than any vaccine(疫苗)or medicine. Hand washing could also prevent the spread of other diseases. When people get germs on their hands, they can infect(感染)themselves by touching their eyes, noses or mouths. Then they can infect others.

1.What's the best title for this passage？

A.Say no to washing hands in the wrong way.

B.Find out why washing hands carefully is so important.

C.Hand washing so important-it gets a day of its own.

D.Want to live a longer life？-wash your hands.

2.The last paragraph mainly tells us _______.

A.how to wash your hands correctly

B.why washing hand with soap is so important

C.the dangers of washing hands without soap

D.when we should especially wash our hands with soap

3.In which part of newspaper would you most probably read this passage？

A.Medical care B.Public service

C.Health report D.Advertisement

高一英语阅读选择中等难度题查看答案及解析