4. We can infer from the passage that 　　　　. A. the doctors thought the accident was not serious B. Christopher thought of committing suicide after the accident C. Dana encouraged Christopher to face the situation D. Christopher’s parents made no reaction to the accident 5. Christopher got involved with charity work because 　 　　　. A. many disabled people needed help B. his wife asked him to do so C. the doctors advised him to do so D. no one helped the disabled people

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