Disappearing Act There have been rumors. There’s been gossip. All Hollywood is shocked to learn that Calista Flockhart, star

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问题                             Disappearing Act
    There have been rumors. There’s been gossip. All Hollywood is shocked to learn that Calista Flockhart, star of Fox’s hit TV show Ally McBeal, is so thin. And we in the media are failing all over ourselves trying to figure out whether Flockhart has an eating disorder, especially now that she has denied it. Well, I’m not playing the game. If the entertainmnt industry really cared about sending the wrong message on body image, it wouldn’t need so many slender celebrities in the first place.
    But the fact remains that 2 million Americans—most of them women and girls— do suffer from eating disorders. In the most extreme cases they literally starve them, selves to death. And those who survive are at greater risk of developing life-threatening infections, kidney damage and heart problems. Fortunately, doctors have learned a lot over the past decade about what causes eating disorders and how to treat them.
    The numbers are shocking. Approximately 1 in 150 teenage girls in the U. S. falls victim to anorexia nervosa, broadly defined as the refusal to eat enough to maintain even a minimal body weight. Not so clear is how many more suffer from bulimia, in which they binge on food, eating perhaps two or three days’ worth of meals in 30 minutes, then remove the excess by taking medicine to move the bowels or inducing vomiting. Nor does age necessarily protect you. Anorexia has been diagnosed in girls as young as eight. Most deaths from the condition occur in women over 45.
    Doctors used to think eating disorders were purely psychological. Now they realize there’s some problematic biology as well. In a study published in the Archives of General Psychiatry recently, researchers found abnormal levels of serotonin, a neurotransmitter in the brain, in women who had been free of bulimia for at least a year. That may help explain why drugs have allowed a lot of people to stop swallowing in large doses of food. Unfortunately, the pills don’t work as well for denial of food. Nor do they offer a simple one-stop cure. Health-care workers must reeducate their patients in how to eat and think about food.
    How can you tell if someone you love has an eating disorder? "Bulimia will often leave evidence around as if they want to get caught." Says Tamara Pryor, director of an eattng-disorders clinic at the University of Kansas in Wichita Anorexia nervosa, by contrast, are more likely to go through long periods of denial.
Bulimia is found to be______.

选项 A、related to the level of serotonin
B、psychological rather than biological
C、identical with anorexia nervosa in the cure
D、a leading cause of death among middle-aged women

答案A

解析 本题考查事实细节。由第四段第三句和第四句可知,研究发现复合胺有助于让许多人停止吞食大量的食物,即摆脱暴食症。因此[A]项正确。第三段首句指出,饮食性疾患(包括暴食症)也是生理问题,排除[B]项。第四段第五句指出,(治疗暴食症的)药物对于治疗厌食不起作用。排除[C]项。[D]项文中未涉及,第三段末句提到,厌食症造成的死亡大多发生在45岁以上的妇女身上。
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