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Right Wrong Not mentioned
all vitamins in the B group vitamins C and E much iron and folate antiviral substances
The President and First Lady. Ed Wilson. Scientists in California. Jan Singer.
The President and First Lady. Ed Wilson. Scientists in California. Jan Singer.
They checked the subjects’ health problems and gave advice. They made record of the subjects’ quality and length of sleep. They exposed the subjects to different kinds of viruses. They gave medicine to the subjects who had caught cold.
Right Wrong Not mentioned
Right Wrong Not mentioned
不填；the 不填；an the; an a; the
there have been decreased returns in the research of fundamental science there are too many important things for scientists to study applied science and engineering take up too much time and energy today’s scientists are not as intelligent as those in the past
20,000,000. 18,000,000. 2,000,000. 38,000,000.
They checked the subjects’ health problems and gave advice. They made record of the subjects’ quality and length of sleep. They exposed the subjects to different kinds of viruses. They gave medicine to the subjects who had caught col
Less than 8%. About 9.5%. 1.5%. 17.5%.
Less than 13%. About 9.5%. 1.5%. 17.5%,
Right Wrong Not mentioned
Right Wrong Not mentioned
20,000,000. 18,000,000. 2,000,000. 38,000,000.
They checked the subjects’ health problems and gave advice. They made record of the subjects’ quality and length of sleep. They exposed the subjects to different kinds of viruses. They gave medicine to the subjects who had caught cold.
They checked the subjects’health problems and gave advice. They made record of the subjects’quality and length of sleep. They exposed the subjects to different kinds of viruses. They gave medicine to the subjects who had caught col
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