Doctors at a Dutch hospital【S1】______a new kind of surgery on Friday to corr

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问题    Doctors at a Dutch hospital【S1】______a new kind of surgery on Friday to correct heartburn (胃痛)without making any external incisions(切口), using a tube that runs down a patient’s throat and into the stomach.
Almost everybody has heartburn【S2】______, but only one in 1,000 people suffers frequently or【S3】______enough from the problem, also known as acid reflux, for doctors to【S4】______surgery.
A team of two surgeons and two stomach【S5】______at the University of Maastricht’ s Medical Hospital used a tube, miniature camera and newly developed【S6】______tools to perform the surgery. It involves  cinching up part of the stomach’s lining to fashion a valve at the end of the esophagus(食道).
"For people who have serious acid reflux, this valve has【S7】______or doesn’t work well enough," said Ronald Van Dam, one of the two surgeons involved. The new valve "is just small enough to pass food without problems".
The technique and equipment used in Maastricht was developed by a private company【S8】______in Seattle, Washington, EndoGastric Solutions, Inc.
The procedure has previously been tested in two sets of 20 European patients, but Friday’s surgeries were the first in【S9】______use. The procedure will be introduced in 30 hospitals around Europe this year.
Dr. Larry Brandt, chief of the gastrointestinal(胃肠的)department at Montefiore Medical Center in New York, said the established procedure "is a fine surgery" but a less invasive【S10】______"would be better" and is likely to emerge during the next several years...

A) robotic          B) seriously       C) expense          D) conventionally
E) recommend       F) specialists    G) based          H) approach
I) operator       J) severe          K) deteriorated    L) performed
M) occasionally    N) procession    O) commercial [br] 【S5】

选项

答案 F

解析根据原句，此处需要一个复数表人的名词，与“surgeon外科医生”并列。所以选择“specialists”，意思是“专家”。

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