Having been ill for a few years she had a particularly fragile ______.A．constitutionB．ins
正确答案
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Having been ill for a few years, she had a particularly fragile ______.
A．constitution
B．institution
C．construction
D．instruction
请帮忙给出正确答案和分析，谢谢！
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正确答案：A
解析：患病多年后，她体质特别虚弱。constitution意为“宪法；体质；设立”；institution“社会公共机构；制度，习俗；设立，创立”；construction“建造，建设；建设物”；instruction“(常pl.)命令，指示；教育，指导”。