Which of the following statement is not true according to the passage? ( )

参考解析：

根据第八段The causes of drug resistance remain elusive可知当前对于耐药性产生的原因仍然难搞清楚，所以选项B表述有误，当前这种耐药性水平并非可控可接受的。根据倒数第二段…use dolutegravir, which is more effective and tolerable than other therapies…The likelihood that the virus will develop mutations and resistance is lower with dolutegravir可知服用度鲁特韦是很有效的，且病毒变异以及耐药性的可能性都会降低，选项A表述正确。根据第四段…resistance to these drugs…it’s not considered safe to prescribe the same HIV medicines to the rest of the population可知当前对于这些药物，如果继续让其他区域的患者服用，只会更危险，所以选项C表达无误。根据第一段against two drugs that constitute the backbone of HIV treatment: efavirenz and nevirapine可知它们是抗HIV药品的主要抑制成分，选项D表述正确。故本题正确答案选B。