C. Ignore coming calls during family time.

　　D. Encourage women to stay at home.

　　5. We can learn from the passage that ______.　

　　A. spillover makes the line between work and home unclear

　　B. cell phones seem to be convenient to families

　　C. cell phones affect men as much as women

　　D. we can do nothing to solve the problem

　　【参考答案】30.DCAB 　

　　【河北省石家庄市2017高考英语质量检测B

　　Sir John a British scientist who won last year's Nobel prize for medicine, said he had predicted at the time of his frog experiments that the successful cloning of a mammal would happen within 50 years．and tha "maybe the same answer is appropriate" far the step to human cloning． Parents who loe children in accidents may be able to clone "copies" to replace them then．

　　Although any attempt to clone an entire human would raise complex moral issues, he biologist claimed people would soon overcome their concerns if the technique became medically useful．Cloning was regarded with extreme doubts when it was first developed but became widely accepted after the birh of Louise Brown, the first

　　"test tube baby" He said,

　　"When my first frog experiment．s were done, an American reporter asked how long it will be before hese things can he done in mammals or humans I said, 'Well, it could be anywhere between 10 years and 100 years-how about 50 year ?' It turned out that it wasn't far off the mark as far as Dolly was concerned．Maybe the same answer is appropriate．" Sir John added that cloning a uman being effectively means making an identical twin, and doctors would therefore simply be "copying what nature has already produced"

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