It can be inferred from the first paragraph that______.A．up to now, Richard didn"t know he

It can be inferred from the first paragraph that______.

A．up to now, Richard didn"t know he had caught certain disease

B．Richard"s illness offered him a chance to think about his life

C．but for his illness, Richard would not have stopped working

D．there was something wrong with both Richard"s mental and physical health

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