Smoking is one of the ______ of heart disease...

Smoking is one of the ______ of heart disease and it kills lots of people every year.

A. causes           B. reasons               C. excuses           D. results

高一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 (移植). However, it’s difficult to get a suitable heart donation, and even if a patient survives the wait, his or her body often rejects (排斥) 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 (血管), chambers (心室) 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 (拇指). And, although it can contract (收缩) like a muscle, it cannot pump out blood like a real one. At present, the heart prototype (样品) 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 (脂肪组织) into human heart tissue with stem cell (干细胞) 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 (个性化的) 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 is the 3D-printed heart important?

A.It will be used on a patient.

B.It is the first 3D-printed heart.

C.It will replace a heart donation.

D.It has a complete heart structure.

2.What problem do 3D-printed hearts have?

A.They cost too much. B.They are too small.

C.They can’t contract. D.They are hard to produce.

3.Why would there be less risk of organ rejection with the 3D-printed heart?

A.It would be made with stem cell technology.

B.It would be made from human fat tissue.

C.It would come from a patient’s body.

D.It would be printed according to the patient’s condition.

4.What attitude does Tal Dvir hold toward the future of 3D printing of organs?

A.Confident. B.Doubtful.

C.Worried. D.Confused.

高一英语阅读理解困难题查看答案及解析

（题文）Smoking is one of the _____causes of cancer,killing millions of people each year.

A. commercial　　 B. similar

C. major　　 D. chemical

高一英语单项填空中等难度题查看答案及解析

Smoking is one of the ________causes of cancer，killing millions of people each year.

高一英语单项填空中等难度题查看答案及解析

It is easy ________ the consequences of unchecked plant disease: food shortage could kill millions of people and cause unrest in the world.

A.imagine B.to be imagined C.imagining D.to imagine

高一英语单项填空中等难度题查看答案及解析

—Our teachers and parents always warn us not to smoke.

—Yes, actually, the risk of heart disease is a powerful argument ____ smoking.

A. against　　　　 　　 B. for

C. into　　　　　　　　 D. at

高一英语单项填空简单题查看答案及解析

If you want to live longer and lower the risk of heart disease, a move to the mountains may help. Research by scientists in Greece shows that living in the mountains is good for the heart and longevity(长寿). People living at higher altitude(海拔) have lower possibility of dying from heart disease than those closer to sea level, even if they have factors that could increase their risk. "Residence in mountainous areas seems to have a ‘protective effect’ from heart disease," said Dr Nikos Baibas of the University of Athens. He and his colleagues suspect that the increased exercise from walking up mountainous area gives the heart a good workout and enables it to cope with lower levels of oxygen.

Researchers studied the health records and death rates of 1,150 Greeks who lived in three villages near Athens over 15 years. One village was 1,000 meters above sea level and the other two were in low-lying areas. Although men and women living in the mountainous village had higher blood pressure rates and other risk factors than people in the other villages, they had a lower rate of death from heart disease and other causes after a fifteen year follow-up." The contrast was more evident among men than among women," Baibas added in a report in the Journal of Epidemiology and Community Health. Heart disease is one of the world's top killers. Smoking, high blood pressure, raised cholesterol levels, being overweight and a family history of the illness increase the possibility of developing the disease.

1.The first sentence in the passage is used to ________.

A. give a very good guessing

B. tell readers what the passage focuses on

C. warn people of the risk of heart disease

D. name a new unknown illness

2.According to the passage, a person ________ may have less possibility of having heart attack.

A. from higher altitude

B. with a better living habit

C. with more money

D. in a happier mood

3.How long does the research of the Greeks last?

A. At most 10 years.                        B. Not mentioned.

C. More than 20 years.                        D. About 15 years.

4.Apart from altitude, how many factors raise the chance of developing heart disease?

A. three                B. four                C. five                D. six

高一英语阅读理解中等难度题查看答案及解析

If you want to live longer and lower the risk of heart disease, a move to the mountains may help. Research by scientists in Greece shows that living in the mountains is good for the heart and longevity (长寿). People living at higher altitude have lower possibility of dying from heart disease than those closer to sea level, even if they have factors (因素) that could increase their risk. “Residence (居住) in mountainous areas seems to have a ‘protective effect’ from heart disease,” said Dr Nikos Baibas of the University of Athens. He and his colleagues guess that the increased exercise from walking up mountainous area gives the heart a good workout and enables it to deal with lower levels of oxygen.

Researchers studied the health records and death rates of 1,150 Greeks who lived in three villages near Athens over 15 years. One village was 1,000 meters above sea level and the other two were in low-lying areas. Although men and women living in the mountainous village had higher blood pressure rates and other risk factors than people in the other villages, they had a lower rate of death from heart disease and other causes after a fifteen year follow-up. “The contrast was more evident among men than among women,” Baibas added in a report in the Journal of Epidemiology and Community Health. Heart disease is one of the world’s top killers. Smoking, high blood pressure, raised cholesterol (胆固醇) levels, being overweight and a family history of the illness increase the possibility of developing the disease.

1.That people living at higher altitude have lower chance of dying from heart attack may because they

A. have good dieting style　　 B. live more happily

C. often climb mountains　　 D. know how to keep healthy

2.What does the underlined word “evident” in the last paragraph mean?

A. Clear.　　 B. Good.

C. Hopeful.　　 D. Lucky.

3.According to the text, people are more likely to die from 　　　　 .

A. smoking　　 B. heart disease

C. high blood pressure　　 D. being overweight

4.What can we infer from the text?

A. People often climbing mountians won’t be ill.

B. The research of the Greeks lasted about 10 years.

C. Four other illnesses reduce the chance of developing heart disease.

D. A person smoking often has a chance of developing heart disease.

高一英语阅读理解中等难度题查看答案及解析

If you want to live longer and lower the risk of heart disease, a move to the mountains may help. Research by scientists in Greece shows that living in the mountains is good for the heart and longevity (长寿). People living at higher altitude have lower possibility of dying from heart disease than those closer to sea level, even if they have factors (因素) that could increase their risk. “Residence (居住) in mountainous areas seems to have a ‘protective effect’ from heart disease,” said Dr Nikos Baibas of the University of Athens. He and his colleagues guess that the increased exercise from walking up mountainous area gives the heart a good workout and enables it to deal with lower levels of oxygen.

Researchers studied the health records and death rates of 1,150 Greeks who lived in three villages near Athens over 15 years. One village was 1,000 meters above sea level and the other two were in low-lying areas. Although men and women living in the mountainous village had higher blood pressure rates and other risk factors than people in the other villages, they had a lower rate of death from heart disease and other causes after a fifteen year follow-up. “The contrast was more evident among men than among women,” Baibas added in a report in the Journal of Epidemiology and Community Health. Heart disease is one of the world’s top killers. Smoking, high blood pressure, raised cholesterol (胆固醇) levels, being overweight and a family history of the illness increase the possibility of developing the disease.

1.That people living at higher altitude have lower chance of dying from heart attack may because they

A. have good dieting style　　 B. live more happily

C. often climb mountains　　 D. know how to keep healthy

2.What does the underlined word “evident” in the last paragraph mean?

A. Clear.　　 B. Good.

C. Hopeful.　　 D. Lucky.

3.According to the text, people are more likely to die from 　　　　 .

A. smoking　　 B. heart disease

C. high blood pressure　　 D. being overweight

4.What can we infer from the text?

A. People often climbing mountians won’t be ill.

B. The research of the Greeks lasted about 10 years.

C. Four other illnesses reduce the chance of developing heart disease.

D. A person smoking often has a chance of developing heart disease.

高一英语阅读理解中等难度题查看答案及解析

Heart disease is the most common cause of death in the United States. Over a million people each year will have a heart attack and 25% will die before they get to the hospital or in the Emergency Department. _1_  Prevention is the best way so it does not damage your heart and limit your ability to enjoy life. Simple ways might help reduce your risk:

Don’t smoke

This means that you should stop smoking as soon as possible if you already smoke, and if you live with a smoker , you should put limits on the smoker. _2_

Get moving

__3_  Find a form of exercise you enjoy enough to want to do it regularly and stick to it. If you have health issues that limit exercise, see your doctor for suggestions and make sure you begin with a program that will not be too challenging for you to keep with it.

__4__

Make sure you follow a heart prevention diet, even if you don’t have any symptoms (症状) of heart disease. _5_  You should eat a high-fiber, low-fat diet rich in fruits, vegetables and whole grains. Meats should be lean (瘦的)，and fats should be limited to heart healthy fats such as olive oil. Sugars and processed foods should be limited, and fruits and vegetables should make up a large part of your daily meals.

E. It’s best if you can get in 30 minutes a day of exercise.

F. If you feel any of these heart attack symptoms, do not ignore.

G. If you haven’t started smoking, be sure never to start this habit.

高一英语信息匹配中等难度题查看答案及解析