C. Americans generally look older than people in other countries do.×
D. Having too much fructose may have bad effects on both looks and health.
54. Which of the following would be the best title for the text ?
A．Sugar—Tasty but Harmful.×
B．Sugar—Harmful to the Old.×
C. Sugar—It Could Destroy You.×
D. Sugar—It Could Age You.
55. What will be most probably talked about next ?
A．The possibility of humans’ aging progress influenced by fructose they take.
B．The differences of the eating habits of humans and rats.×
C. The harm junk food ×does to humans’ health.
D. The factors which lead to being overweight.×
55题本题解题思路：
Rats that eat high levels of a natural sugar known as fructose seem to age faster than other rats----and the same could be true for people who eat too much sweet junk food, Israeli researchers said Monday.第一段
"Americans are eating more and more processed foods such as carbonated drinks, baked goods, canned fruits, jams and dairy products that contain fructose." Werman said in a statement. Other studies have shown that high fructose intake can affect how the body handles glucose and increases insulin resistance---- which can both be important measures of the tendency toward diabetes.倒数第二段
The rats Werman worked with were fed much more than
the average adult person might eat in a day, which is standard in such
experiments. The rats were fed 12.5 grams of fructose per kg
本题解题思路：
拿老鼠做“摄入过多糖易导致衰老”这一课题，最终目的是为了说明其表现在人的身上之结果，所以55题选A.The possibility of humans’ aging progress influenced by fructose they take.（受摄入糖的影响人衰老进程的可能性。）而且，文中第一段后半句，倒数第二段的例子及最后一段的最后一句都是提示的线索。不过，另一个问题是，考生容易因粗心大意而看错“题干”，不知道你是否也看错了。