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问题 单项选择题

严重外耳道疖肿致耳后红肿、外耳道肿胀阻塞者，需与急性乳突炎鉴别，下列鉴别要点哪一项是错误的（）。

A.前者压迫耳屏时耳痛加剧，后者则无

B.前者牵拉耳郭时耳痛加剧，后者则无

C.前者耳前淋巴结不肿大，后者则肿大

D.前者耳乳突区无压痛，后者则有

E.前者耳溢为稠脓，后者为黏稠脓

答案

参考答案：C

解析：前者耳前淋巴结肿大，后者则不肿大

阅读理解

Long time ago, our world was very beautiful. There were trees, flowers and rivers. It was very clean and tidy.  1 . We are living in a polluted environment, which is bad for out earth.   2  .The public has been calling for actions against pollution. Scientists have told us to protect out environment,  3 .

The earth is our only home. We should make it comfortable for ourselves and for our children in the future. Now nearly all of the countries are trying their best to stop pollution. Although they have done much, the progress is slow,   4 . No matter how difficult it is, we should try our best to fight against pollution. By working together,   5 .

根据短文内容，从方框中选出能填入空白处的最佳选项，补全短文。（5分）
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单项选择题 A1型题

下述所列，——不是黑斑病甘薯毒素中毒的致病因子（）。

A.丁烯酸内酯

B.翁家酮

C.1一甘薯醇

D.4一甘薯醇

E.以上均不是
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