单选题 A great many teachers firmly believe English is one of the poorest-taught subjects in high schools at present.
A. A great many teachers
B. firmly
C. poorest-taught
D. at present

【正确答案】 C
【答案解析】改为most poorly taught，在这里修饰过去分词taught的必须是副词，而不是形容词。例如：well educated，well done等。故将poor改为poorlly。