A-A+
Why is it so hard to diagnose the autism？A．Bec
问题详情
Why is it so hard to diagnose the autism？
A．Because there still exists no test for diagnosis by now.
B．Because diagnosis of the same autism cases are different.
C．Because scientists make no progress in uncovering the genetic factors.
D．Because none of the signs of autism is obvious to be diagnosed.
参考答案
正确答案：A
解析：综合理解题 。本题考查autism诊断比较困难的原因。由定位句得知，诊断孤独症比较难是因为没有检测手段，由此可知A项正确；由第一个小标题第二段第二句It's a complex process, since no two cases are alike and signs range from mild to severe可以得知，检测过程很复杂，因为没有两个病例是一样的，而且症状也是有轻有重，所以并不是一样的明显，故B项和D项与原文意思不符；由第一个小标题下第一段的中间although scientis
