[单项选择]Rats that eat high levels of a natural sugar known as fructose (果糖) seem to age faster than other rats-and the same could be true for people who eat too much sweet (67) food, Israeli researchers said.
Fructose, found (68) in honey and fruit, is used widely in foods (69) from soft drinks to yogurt. But (70) its sweet taste is popular, the sugar could cause wrinkles and health problems, the researchers said. Dr. Moshe Werman and Boaz Levi of the Technion-Israel Institute of Technology (71) large amounts of fructose to laboratory rats. Writing in the Journal of Nutrition, they said the fructose-fed rats showed changes (72) the collagen (胶原质) of their skin and bones.
Collagen, a fibrous protein found in connective tissue, bone and cartilage (软骨), basically holds the body together. The (73) of collagen is what causes sagging (松弛) and deep wrinkles in older people.
The process affected,
A. through
B. of
C. in
D. to

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[单项选择]Rats that eat high levels of a natural sugar known as fructose (果糖) seem to age faster than other rats-and the same could be true for people who eat too much sweet (67) food, Israeli researchers said.
Fructose, found (68) in honey and fruit, is used widely in foods (69) from soft drinks to yogurt. But (70) its sweet taste is popular, the sugar could cause wrinkles and health problems, the researchers said. Dr. Moshe Werman and Boaz Levi of the Technion-Israel Institute of Technology (71) large amounts of fructose to laboratory rats. Writing in the Journal of Nutrition, they said the fructose-fed rats showed changes (72) the collagen (胶原质) of their skin and bones.
Collagen, a fibrous protein found in connective tissue, bone and cartilage (软骨), basically holds the body together. The (73) of collagen is what causes sagging (松弛) and deep wrinkles in older people.
The process affected,
A. junk
B. garbage
C. diet
D. healthy

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