原位癌多采用
A．全子宫切除术B．子宫次广泛性切除术C．子宫广泛性切除术及盆腔淋巴清扫术D．放疗E．化疗
参考答案：A
he field research will take Joan and Paul about five months; it will be a long time _______ we meet them again.
A．after
B．before
C．since
D．when
I think you probably know China has adopted a flexible policy ( )her foreign trade.
A．on
B．with
C．in
D．under
