根据下列材料请回答 46～50 题：
What’s Lacking in ‘Sicko’?
When it comes to economic decisions，there are always trade．offs(取舍)．Gain one thing and you lose something else．_________(46)
The central argument of Michael Moore’s movie“Sicko”一that the cure to the nation’s health care problems is a single—payer system—is hardly novel and is certainly worth consideration，whether or not you agree with it．But in comparing the American system with single—payer plans of other countries—Britain，France，Canada and Cuba—Mr．Moore left out the trade?offs，characterizing those countries as health care paradises．_________(47)
Kurt Loder，the film critic who is best known as the anchor(主持人)of“MTV News，” wrote a critique(批评)of the film for MTV’s website． “Sicko” he said。“does a real service”in portraying(描绘)victims of American insurance companies—like the people who died because their only treatment、options were considered“experimental”and therefore not covered．_________ (48)
When “governments attempt to regulate the—balance between a limited supply of health care and an unlimited demand for it，they’re inevitably forced to ration treatment，Mr．Loder asserted．_________ (49)Mr．Loder cited the short film“Dead Meat，”which presents anecdotes(轶事)of failure in the Canadian single—payer system．In its one—sidedness，“Dead Meat”might have made for a nice double feature with“Sicko．”and left movie—goers with a more complete understanding of the complications of deciding on a health care system。_________ (50)
This all makes an otherwise “emotionally compelling film not necessarily an intellectually satisfying one；”wrote Darren Barefoot，a Canadian blogger(博客作者)．