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参考答案:错
______by the advances in technology, many farmers have set up wind farms on their land. [ ]
A. Being encouraged
B. Encouraging
C. Encouraged
D. Having encouraged
下列哪项符合慢性化脓性中耳炎的特征()
A.中耳粘膜、骨膜或深达骨质的慢性化脓性炎症
B.可分为粘膜型,肉芽型及坏死型三种
C.为耳鼻咽喉科临床常见病、多发病
D.以耳流脓、鼓膜穿孔及听力下降为临床特征
E.可引起多种颅内、外并发症