2.Kidney(腎) transplants are a life-saving solution for many sick people around the world.However,they may have to wait five or ten years for a donated organ(器官).Many of them die when waiting for one.A new kind of operation may solve this problem.
For the first time,a pig kidney has been transplanted into a human.Reporting the story,CNN called this "a major advance".
The operation was done at New York University (NYU) Langone Health in the US.The transplant was to test whether the body would reject(排斥) the organ.So,a brain-dead patient was chosen to receive the operation,after her family agreed.
The kidney came from a pig with modified genes(改造后的基因).Because of the modification,the human's body did not reject the kidney.
For three days,the new kidney was connected to the patient's blood vessels(血管).However,it was kept outside of her body.This way the doctors could see and quickly deal with any problems.
The transplanted kidney "looked pretty normal," said Dr Robert Montgomery,who led the study.The kidney made the same amount of urine(尿液) that we would expect as a transplanted human kidney,he said.
Most importantly,there was no sign of "early rejection" that usually happens when pig kidneys are transplanted into humans.
Researchers have been working for ten years to use animal organs for transplants,reported Reuters.Rejection has so far been a common problem,but the genetically modified pig seems to be a game changer.
Although the patient died three days later because of other causes,the experiment was still seen as a great success.At least for now,it could be a short-term solution to keep people alive until they can receive a human kidney.
(1)Compared to donated human organs,animal organs
.
A.have better-modified genes
B.a(chǎn)re easier to get
C.a(chǎn)re longer-lasting
D.a(chǎn)re usually not rejected
(2)What do we know about the pig kidney transplant?
A.The pig kidney's shape was modified.
B.The pig kidney transplant was unsuccessful.
C.The pig kidney was not placed inside the patient's body.
D.The pig kidney transplant operation was more difficult than others.
(3)Early rejection didn't happen in the operation because
.
A.the doctors watched it carefully
B.the kidney had been genetically modified
C.the patient's body had been genetically modified
D.the pig kidney fit properly inside the patient's body
(4)What can we infer(推斷) from the last paragraph?
A.The pig kidney can work for a long time.
B.Putting a pig kidney into a human body is not a good idea.
C.Human kidneys are still the best for performing transplants.
D.The technique(技術(shù)) of transplanting parts from pigs to humans is not reliable(可靠的).