单选题
People might be seriously ill if the cells in their body ______.
A、
grow without being instructed
B、
die regularly
C、
fail to follow people's instructions
D、
develop in the human body
【正确答案】
A
【答案解析】
[考点] 推断题
[解析] 由最后一段第一、二句话可推出，故选A。
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