C. The radioactive material may be blown over the area causing the pollution to water .

　　D. The concentration of radioactivity in the seawater can not be diluted.

　　3. What’s the meaning of the underlined word “dilution”?

　　A. chemical

　　B. salt

　　C. dissolution D. elimination

　　4. According to the passage which of the following is not TRUE ?

　　A. Water people drink ,food and vegetables people eat may be polluted by nuclear radiation .

　　B. Japan is the only country to have had atomic bombs dropped on it.

　　C. You can go to www.unsv.com. to get the latest news .

　　D. The nuclear accident in Japan is the worst in the nuclear power industry.

　　D

　　It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia (学术界) outweigh any financial considerations.

　　Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia mid-career was to take advantage of the greater freedom to choose research questions. Some areas of inquiry have few prospects of a commercial return, and Lee’s is one of them.

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