D.Getting no natural light.
解析:选D。推理判断题。根据文章的第二段最后两句和最后一段首句可知,无法计时和没有自然光使她的生理节奏产生了混乱。答案为D。
3.Where does the text probably come from?
A.A novel.
B.A news story.
C.A pet magazine.
D.A travel guide.
解析:选B。推理判断题。这篇文章为读者介绍了一项关于人体生理节奏的研究,应出现在报纸杂志等通俗读物上,故答案为B。
B
Words:395 难度系数:★★ 建议用时:7分钟
The United States government wants to know what the public thinks about its findings on the safety of cloned animals.
The Food and Drug Administration says meat and milk from clones of adult cattle,pigs and goats are safe to eat.An FDA official called them “as safe to eat as the food we eat every day.” And when those clones reproduce sexually,the agency says,their offspring (后代) are safe to eat as well.But research on cloned sheep is limited.So the FDA proposes that sheep clones not be used for human food.
The United States this year could become the first country to agree to the sale of foods from cloned animals.First,however,the public will have ninety days to comment on three suggested documents.On December 28th the FDA released a long report,called a draft risk assessment,along with two policy documents.
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