问题
选择题
What ______ the doctors most was that they could not find the cause of the disease.
A．astonished
B．puzzled
C．surprised
D．amused
答案
答案：B
astonish“令人吃惊”；puzzle“令人迷惑”；surprise“令人吃惊”，程度小于astonish；amuse“令人发笑”。由句意可知B项为正确答案。