Passage Three
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I can think of no better career for a young novelist than to for some years a sub-editor on a rather conservative newspaper. The man who was of chief importance to me in those days was the chief sub-editor, George Anderson. I hated him in my first week, but I grew almost to love him before three years had passed. A small elderly Scotsman with a flushed face and laconic humour, he drove a new sub-editor hard with his sarcasm. Sometimes I almost fancied myself back at school again, and I was always glad when five-thirty came, for immediately the clock marked the hour when the pubs opened, he would take his bowler hat from the coat-rack and disappear for thirty minutes to his favourite bar. His place would be taken by the gentle and courteous Colonel Maude. Maude was careful to see that the new recruit was given no story w A. stand over them while they worked and make unpleasant remarks B. go out for a drink and let them solve their own problems C. provoke them into disliking him D. use bitter humour to draw their attention to their mistakes [单项选择]Scientists have known for more than two decades that cancer is a disease of the genes. Something scrambles the DNA inside a nucleus, and suddenly, instead of dividing in a measured fashion, a cell begins to copy itself furiously. Unlike an ordinary cell, it never, stops. But describing the process isn’t the same as figuring it out. Cancer cells are so radically different from normal ones that it’s almost impossible to untangle the sequence of events that made them that way. So for years researchers have been attacking the problem by taking normal cells and trying to determine what changes will turn them cancerous - always Without success.
According to a report in the current issue of Nature, a team of scientists based at M. I .T.’s Whitehead Institute for Biomedical Research has finally managed to make human ceils malignant -a feat they accomplished with two different cell types by inserting just three altered genes into their DNA. While these manipulations were done only in lab d A. how cancer ceils are formed B. why cancer cells never stop dividing C. why normal cells can turn into cancer cells D. how different normal cells are from cancer cells 我来回答: 提交
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