The time is not far away _______ the news will be made known ________ will represent our company to attend the coming medical conference to be held in Beijing.

A．until; who

B．when; who

C．before; which

D．when; whenever

土坝截流施工中，改善龙口水力条件的措施包括()

A.定向爆破

B.双戗截流

C.三戗截流

D.宽戗截流

E.平抛垫底