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单项选择题
What is most likely to be the treatment for Richard
A．A proper diet and tablets.
B．A new kidney for him.
C．Insulin injections.
D．An operation to remove sugar.
单项选择题
Slotin did not call the hospital for help until ______.
A．the screwdriver slipped
B．a chain reaction began
C．he apologized to his co-workers
D．he calmly handled the accident
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