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发布时间:2024-07-28 06:49:46

[单项选择]In recent years, researches have suggested more health value from vitamin D than had once been thought.
Vitamin D is (62) naturally in the blood. Sunlight is a (63) source. It is also found in some foods. Vitamin D helps to increase levels of calcium in the blood. It helps build strong bones and teeth.
It also (64) to do more than just protect against rickets (软骨病). That serious bone disease was the reason why vitamin D was added to milk. Rickets is now (65) in the western world. But it is still a common childhood disease in developing countries. Rickets can and is also (66) to cause bone pain and weakness, teeth problems and muscle (67)
According to the study by the Harvard School of Public Health, Vitamin D might protect against multiple sclerosis (硬化症), also called MS.
MS is a (68) disease of the central nervous system that (69) about two million people around the worl
A. difference
B. relative
C. relationship
D. combination

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[单项选择]In recent years, researches have suggested more health value from vitamin D than had once been thought.
Vitamin D is (62) naturally in the blood. Sunlight is a (63) source. It is also found in some foods. Vitamin D helps to increase levels of calcium in the blood. It helps build strong bones and teeth.
It also (64) to do more than just protect against rickets (软骨病). That serious bone disease was the reason why vitamin D was added to milk. Rickets is now (65) in the western world. But it is still a common childhood disease in developing countries. Rickets can and is also (66) to cause bone pain and weakness, teeth problems and muscle (67)
According to the study by the Harvard School of Public Health, Vitamin D might protect against multiple sclerosis (硬化症), also called MS.
MS is a (68) disease of the central nervous system that (69) about two million people around the worl
A. made
B. produced
C. created
D. manufactured

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