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问答题
You are required to write a composition about the trend of aged people to live alone. Your composition should contain the following points. (1)Present situation. (2)Possible reasons for such situation. (3)Your own opinion. You should write 160--:200 words on ANSWER SHEET 2.
单项选择题
This passage is mainly about ().

A. the cluster of leukaemia cases around the Sellafield nuclear reprocessing part
B. the kind of infection that causes childhood leukaemia
C. the causes of childhood leukaemia
D. a new finding by British scientists

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