(单选题)

What does the passage mainly talk about? ( )

A.Authorities try to find effective and tolerable therapies to treat HIV.

B.Authorities have discovered the causes of resistance to crucial HIV drugs.

C.WHO conducted surveys to examine the levels of resistance in people who had started HIV treatment.

D.Authorities have uncovered an alarming surge in resistance to crucial HIV drugs.

参考答案：D

参考解析：

文中高频词是drug resistance以及HIV。选项A：寻找有效治疗，文中最后提到了替代药物的有效性，但是属于片面信息；选项B：发现耐药性产生原因，文中作者明确提出当前耐药性产生原因并不是十分清楚；选项C：WHO对HIV患者的耐药性调查；选项D：权威们揭露了患者对HIV主要药物产生激增式的耐药性。文中有提到WHO的报告，但是后面又提到了很多专业人士的研究，所以相对于C选项表达，D项表达范围更广一些，更符合文章主旨。故本题正确答案选D。

知识点：主旨题英语阅读理解通用英语