在现实生活中，人们一般把社会主义和（）看成是两种对立的意识形态。
A.无政府主义
B.自由主义
C.保守主义
D.法西斯主义
参考答案：B
— Did Jim ride his bike to school this morning?
— He _____ come to school by bike. He hasn't found his bike yet.[ ]
A. may
B. mustn't
C. can
D. can't
成本分析一般在（）进行。
A.事前
B.事中
C.事后
D.事前、事中、事后
