请根据以下内容回答 31～35 题：
Passage Four

第 31 题 The phrase “ a disease that the public still had a lot to learn about”here means a disease that_________ {Page}.
was already well-known then
B． was too complicated for people
C． was still too new to be understood
D． killed too many victims then

A．

【参考答案】

C
C语义理解题。根据全文大意可知艾滋病是一种人们还不甚了解的不治之症，因此正确是C。参考译文：1991年，当被......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)