In the new curriculum, some courses are , while others are optional for middle school students.
A. traditional
B. pulsory
C. impressive
D. significant
网友回答
A. traditional
(答案→)B. pulsory
C. impressive
D. significant
解析：形容词辨析。A传统的；B必须的，强制性的；C给人深刻印象的；D重要的；句意：在新课程中，对于中学生来说，一些课程是必须要学的，而有一些是选修的。故B正确。