【单选题】

A、class action lawsuit has been filed against a prominent Toronto doctor by patients who allege he injected a banned substance into their faces for cosmetic purposes. The doctor had already been investigated for more than three years for using the liquid silicone, a product not authorized for use inCanad

A、

Some patients say they are now suffering health problems and think the liquid silicone may be to blame. One of those patients isAnnaBarbiero. She says her Toronto dermatologist told her he was using liquid silicone to smooth out wrinkles. What she says he didn’t tell her is that it isn’t approved for use inCanad

A、"I didn’t know what liquid silicone was and he just called it ’liquid gold’,"Barbiero remembers.After her last treatment,Anna discoveredDr. Sheldon Pollack had been ordered to stop using the silicone two years earlier by HealthCanad

A、Experts say silicone can migrate through the body, and cause inflammation and deformities.

"My upper lip is always numb and it bums,"Barbiero says.Barbiero is spearheading (带头) a lawsuit against the doctor, who her lawyer thinks might involve up to 100 patients injected with the same material. "The fact, a physician of his stature would use an unauthorized product on a patient because he thought it was okay, is really very disturbing," says lawyerDouglasElliott.

Ontario’sCollege of Physicians and Surgeons is also investigatingDr. Pollack to see if, in fact, he continued to use the silicone after agreeing to stop and whether he wrote in patient records that he used another legal product when he used silicone. However, in a letter to theCollege,Dr. Pollack wrote that he had always told patients that the silicone was not approved for sale inCanada, and had warned them of the risks.And inBarbiero’s case, "... at the time of her first visit, prior to her ever receiving IGLS treatment, I specifically informed her that the material was not approved for sale inCanada by the Health ProtectionBranch and that I did receive the material from outside the country...I would like to emphasize that, as is evident on Ms.Barbiero’s chart, I drew a specific diagram on the chart which I carefully discussed with and explained to Ms.Barhiero as I did with every other patient to explain the nature and likelihood of complications and the masons and consequences of those possible complications."

Dr. Pollack declined to speak toCTV News. or to have his lawyer discuss the case. None of the allegations have been proven in court.But the case raises questions about the ability of governing bodies to monitor doctors. "There’s a larger message and that is: buyer beware," says Nancy Neilsen ofCosmetic SurgeryCanad

A、"It’s incumbent (负有义务的) on consumers to do their research.\

What does the word "dermatologist" (Line 2. Par

A、2) mean

A、

A、person whose work is filling, cleaning and taking out teeth.

B．

A、person whose work is studying mental diseases.

C．

A、person whose work is healing eye diseases.

D．

A、person whose work is curing skin diseases.