—Would you please find a world map which is drawn to a scale of                      .

—Yes,sir.Here you are.

A．one out of ten thousand

B．one in ten thousands

C．one to ten thousand

D．one of ten thousands

侵蚀性葡萄胎或绒毛膜癌化疗疗程的确定通常是（）.

A.症状完全消失，再继续治疗1～2个疗程

B.肺部转移灶消失，再继续治疗2～3个疗程

C.患者对化疗药物难以忍受，不再继续化疗

D.妇科检查子宫恢复正常大小，再继续治疗1～2个疗程

E.β-HCG每周检测连续3次正常，再继续治疗2～3个疗程