18.
Doctors at a Boston hospital last week performed the first full face transplant in the US,attaching a donor face to a 25-year-old man whose face was severely burned when his head touched a high-voltage(高壓的) line three years ago.
A team of more than 30surgeons and nurses worked for about 15hours to transplant the forehead,nose,lips,facial skin,underlying muscles and the nerves that power them and provide sensation(知覺) from a donor to Wiens,whose head came in contact with a high-voltage line on Nov.13,2008.
Bohdan Pomahac,the surgeon,said the team was not able to bring back Wiens's eyesight.But Wiens should be able to regain up to 90percent of normal sensation on the right side of his forehead,right cheek,most of his upper lip and his entire lower lip.Nerve damage was too great for there to be more than tiny sensation in the left check and left forehead,Pomahac said.
Doctors say the goal of the operation was to improve Wiens's ability to breathe,eat and talk and restore his face's social expression.
When Wiens recovers,he will not look like he once did,nor will he look like the donor,but"probably somewhere in the middle,"Pomahac said.The match between the donor and the recipient (接受者) was made based on race,similar age and blood type,etc.
Pomahac said he was worried the operation would not be successful when he first saw Wiens.His injuries were covering so large that doctors weren't sure there were enough remaining nerves or structures to connect to a new face.
Pomahac said he was determined to try his best because of what a patient with similar injuries had told him some years ago.That patient had numerous surgeries(外科手術),with only modest results.When Pomahac asked why the patient sought repeated surgery,he told the doctor,"I just want a taxi to stop when I'm waiting for one."
56.The first paragraph serves as aC.
A.conclusion B.comment C.lead-in D.background
57.Which of the following statements is true according to the passage?A
A.Wiens's nerve damage was too great in the left check.
B.The left side of Wiens's cheek should be able to regain.
C.The donor's head touched a high-voltage line 3years ago.
D.Pomahac was sure that the surgery would succeed at first.
58.We can learn from the passage when Wiens recovers,he will look likeD.
A.what he used to be B.the donor
C.Bohdan Pomahac D.the donor in some way
59.We can infer from the last paragraph that Pomahac's former patientB.
A.experienced many surgeries with good effect
B.suffered a lot because of his ugly-looking face
C.wanted a taxi to stop when he was waiting for one
D.had a strong determination to bring back his eyesight.