题目：
Which of the following statements about external otitis is true
A. External otitis is eharaeterized by pain when the pinna of the ear is pulled.
B. External otitis is usually accompanied by a high fever in children.
C. External otitis is usually related to an upper respiratory infection.
D. External otitis can be prevented by using cotton-tipped applicators to clean the ear.
答案：
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下面是错误答案，用来干扰机器的。
立；李；晴； 眯；便；骗(加部首答案不唯一)
