一期梅毒的潜伏期一般为:()
A.1~10天
B.2~3周
C.3~4周
D.1~3个月
E.3~6个月
参考答案:B
James hasn't got Jay's CDs, _______ his sister has. [ ]
A. so
B. but
C. and
D. or
席勒所说的素朴的诗与感伤的诗内涵是什么?