－Hello, may I speak to Mr. Smith?

－Sorry, he isn’t in. He__________ the office.

A. has been to     B. has gone to          C. has been away

妊娠8周行吸宫术后半个月， * * 持续流血，量时多时少。妇科检查：宫口松，子宫如孕40天大小，较软，尿妊娠试验阳性，应考虑的诊断为

A．吸宫不全
B．绒毛膜癌
C．子宫内膜炎
D．子宫复旧不全
E．侵蚀性葡萄胎