Imagine sitting down to a big dinner: a massive steak, a large portion of fried potatoes, and cake for dessert. After eating so much, you should be too full to eat another bite. But some people experience a powerful urge to keep eating, even after _26_ in a huge meal, a behavior that makes little sense, as most adults are well-versed in the dangers of obesity, which researchers have shown correlates with _27_ health issues and is even linked to increased _28_ risk. But some people still keep eating long after they should stop, a phenomenon Dr. Susan Thompson calls“insatiable (永不满足的) hunger.” It is characterized by two main _29_: not being satisfied by eating, and having a desire to stay sedentary(久坐不动的).
This is at _30_ with how humans are biologically programmed. When there was a great deal of food available, ancient people would gorge on calories; this massive calorie intake was accompanied by an urge to get active. Humans were also programmed for something called“compensation,” which is the brain's _31_ mechanism for preventing the accumulation of excess weight. With compensation, if you eat one large meal in the morning, you are naturally _32_ to eat less for the rest of the day.
But recent studies show that 70% of American adults have lost the ability to naturally compensate for the calories they consume; worse _33_ , a significant number of them report _34_ hunger halfway through an eating session, but, by the end of the meal, they feel the same or higher levels of hunger than when they sat down. Dr. Thompson argues that the main cause of this phenomenon is the modern diet, which is _35_ of food high in sugar, carbohydrates and calories.
A) attributes
B) comprised
C) conceded
D) conservation
E) diminishing
F) far
G) inclined
H) indulging
I) innumerable
J) mortality
K) odds
L) plights
M) regulatory
N) still
O) unmatchable
答案解析：
26.空格前是介词 "after"，因此空格处应填入动名词，构成介词短语。根据句意“即使在饱餐一顿之后”，需要一个表示“沉溺于，尽情享受”的动词。indulging in 意为“沉溺于”，符合语境，所以选H。
27. 空格位于名词 "health issues" 前，且被 "correlates with"(与……相关)修饰，因此空格处应填入一个形容词。根据句意“与无数的健康问题相关”，需要一个表示“数量极多”的形容词。innumerable 意为“无数的，数不清的”，符合句意，所以选I。
28. 空格位于形容词 "increased" 和名词 "risk" 之间，因此空格处应填入一个名词，修饰 "risk"。根据句意“甚至与增加的死亡风险有关”，需要一个表示“死亡”的名词。mortality 意为“死亡率，死亡”，mortality risk 是常见搭配，意为“死亡风险”，符合句意，所以选J。
29. 空格位于 "two main" 之后，因此空格处应填入一个复数名词。根据句意“它有两个主要特征”，需要一个表示“特征，特性”的名词。attributes 意为“特征，属性”，符合句意，所以选A。
30. 空格位于 "at" 和 "with" 之间，因此空格处应填入一个名词，构成固定短语。根据句意“这与人类的生物编程方式相冲突”，at odds with 是固定搭配，意为“与……冲突，与……不一致”，符合句意，所以选K。
31. 空格位于名词 "mechanism" 前，且被 "brain's" 修饰，因此空格处应填入一个形容词。根据句意“大脑的调节机制”，需要一个表示“调节的，监管的”形容词。regulatory 意为“调节的”，符合句意，所以选M。
32. 空格位于 "are naturally" 之后，且后面跟不定式 "to eat less"，因此空格处应填入一个形容词。根据句意“你自然会倾向于少吃”，be inclined to do sth. 是固定搭配，意为“倾向于做某事”，符合句意，所以选G。
33. 空格位于 "worse" 之后，且后面有逗号隔开，因此空格处应填入一个副词。根据句意“更糟糕的是”，worse still 是固定用法，用于引出更糟糕的情况，符合句意，所以选N。
34. 空格位于名词 "hunger" 前，作其定语，因此空格处应填入一个现在分词或形容词。根据句意“报告在进食过程中饥饿感正在减弱”，需要一个表示“逐渐减少的”词。diminishing 意为“逐渐减少的”，符合句意，所以选E。
35. 空格位于 "which is" 之后，因此空格处应填入过去分词，构成被动语态。根据句意“现代饮食由高糖……的食物组成”，be comprised of 是固定搭配，意为“由……组成”，符合句意，所以选B。
