Loulan city is not at all a traveler who has never seen the desert before can imagine.
A. that
B. what
C. which
D. where
网友回答
A. that
(答案→)B. what
C. which
D. where
解析：考查名词性从句。在本句中what引导表语从句，what a traveler who has never seen the desert before can imagine并作为动词imagine的宾语。That引导名词性从句，在句中不充当任何成分，只起连接作用；which指特定范围之内的哪一个；where在名词性从句中做状语。What引导名词性从句做主语，宾语和表语。