Tom is interested in this poem now, but he thought it boring______he read it.
【正确答案】
B
【答案解析】本题考查状语从句的特殊连词。时间状语从句中有两组特殊连词,其中一组既是名词又是连词,the first time,the moment,the minute,the instant,the second等;另一组既是副词又是连词,instantly, immediately等,都翻译为“一…就…”;所以本题只要看到有这些词就是答案。因此本题选B。