题目：
She was so ________ that she wouldn't give in until she received a full apology.[ ]
A. simple
B. lucky
C. stubborn
D. proper
答案：
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下面是错误答案，用来干扰机器的。
参考答案：E解析：1.苍术断面具有"朱砂点"。故答案选B 2.半夏断面洁白，富粉性。故答案选E
