branch A. technical B .machine C. research D. stomach
高三英语单项填空中等难度题
branch A. technical B .machine C. research D. stomach
高三英语单项填空中等难度题查看答案及解析
charge
A.machine | B.stomach | C.achievement | D.technology |
高三英语单项填空中等难度题查看答案及解析
change
A.machine | B.chemist | C.headache | D.research |
高三英语其他题简单题查看答案及解析
Over a four-year period, Swiss researchers have developed a machine that can keep human livers (肝)alive outside of the body for one week.
Livers are among the most commonly transplanted (移植)human organs. Current technology can only keep human livers alive for up to 24 hours. It is reported that, in 2017, about 8.000 liver transplants were performed in the U.S., of which 360 used livers from living givers In addition, about 11,500 people were registered on a waiting list to receive a liver transplant. Keeping livers alive and functioning for longer periods could greatly improve the chances of survival for patients.
The researchers say the purpose of their “Liver4Life” machine is to perform what they call liver perfusion (灌注)operations outside of the human body. Perfusion is the process by which blood or other liquids are pumped through organs and tissue. The machine keeps the liver at the right temperature and moves it in a way that would be natural in the body. Using a pump to fill the liver with blood acting like a human heart, the machine also provides oxygen to the organ, controls red blood cell levels and removes waste.
The research team began their experiments with livers from pigs. After repeated testing and engineering development, they succeeded in getting the pig livers to survive for seven days with support only provided from the Liver4Life machine. They also discovered the system can work to repair damaged livers. The team is now planning its next step to transplant machine-treated organs into patients.
Pierre-Alain Clavien. leader of the research said in a statement. “This technology will greatly increase the number of livers available for transplant, improving the chances of survival for patients. The success of this unique machine opens the way for many new applications in transplantation and cancer medicine.”
1.What does the author intend to do in paragraph 2?
A.Introduce a brand new topic for discussion.
B.Provide some latest data about present liver transplants.
C.Show the urgency of tech improvement in liver transplants.
D.Remind readers concerned of the importance of a healthy liver.
2.What does the underlined word “it” in paragraph 3 refer to?
A.The machine. B.The liver.
C.The temperature. D.The tissue.
3.What can we learn about the Liver4Life machine?
A.It is among the most commonly used machines for liver transplants.
B.It is aimed to carry out liver perfusion operations in the human body.
C.It can perform several functions to keep the liver working normally.
D.It can be used to keep the pig livers alive for more than one week.
4.Where is this text most likely from?
A.A biology textbook. B.A first aid brochure.
C.A social web page. D.A health magazine.
高三英语阅读理解中等难度题查看答案及解析
从A、B、C、D四个选项中,找出其划线部分与所给单词的划线部分读音相同的选项。
1.wonder
A. woman B. second C. stomach D. shock
2.quarter
A. marry B. market C. partly D. toward
3.weigh
A. enough B. plough C. rough D. cough
4.entrance
A. event B. pretty C. fridge D. gentle
5.measure
A. pleasure B. sugar C. prison D. settle
高三英语语音知识中等难度题查看答案及解析
语音知识
1.hear
A. nearly B. search C. bear D. heart
2.change
A. machine B. headache C. technique D. research
3.surprise
A. police B. apologise C. bridge D. children
4.safely
A. base B. season C. Asia D. usually
5.museum
A. subject B. true C. huge D. busy
高三英语词汇中等难度题查看答案及解析
cheer A. machine B.school C. chain D. chemist
高三英语单项填空简单题查看答案及解析
Employees need to ____________ the latest technical developments.
A. catch up with B. keep up with C. get along with D. team up with
高三英语单项填空中等难度题查看答案及解析
语音知识( 共5小题,每题1分;满分5分)
1. headache A. machine B. chemist C. chain D. reach
2. southern A. breath B. athlete C. theme D. worthy
3. contain A. remain B. mountain C. certain D. portrait
4. seize A. neighbour B. weigh C. eighty D. receive
5. advanced A. grasped B. learned C .breathed D. benefited
高三英语单项填空困难题查看答案及解析
Some scientists say that the tomato is technically a fruit,__it is eaten as a vegetable.
A. although B. because C. as if D. as long as
高三英语单项填空中等难度题查看答案及解析