While in bed the doctor was telephoned to go back to the hospital because of ____case. ( 章节：8 难度：4)_做题室

单项选择题While in bed the doctor was telephoned to go back to the hospital because of ____case. ( 章节：8 难度：4): A、a treatment; B、an operation; C、an incident; D、an emergency

正确答案：D
答案解析：
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