患者43岁。子宫次全切除术后6年。4个月前开始出现 * * 分泌物增多，黏液水样，且伴有腰部胀痛，尿量可。妇科检查：宫颈结节状， * * 前壁上1／3质硬，双侧主韧带团块状增粗达盆壁，触痛（+）。既往无慢性病史。

若采用放疗，则容易出现的副反应为（）。

A.放射性直肠炎

B.肠穿孔

C.骨髓抑制

D. * * 直肠瘘

E.胃肠道反应

What would have happened ________, as far as the cliff?

A．if Bob has walked farther

B．if Bob should walk farther

C．if Bob had walked farther

D．if Bob walked farther