肾血管平滑肌脂肪瘤的CT诊断有确诊意义的是（） A.肾实质占位，境界清楚而密度不均

At the computer operation test, one is supposed to stay at his own machine, keep his eyes on his screen, ______ to anyone.

A．and not to speak

B．but could not speak

C．instead of speaking

D．or rather speak

Cathy went to the hospital alone. If she had told me about it, I _____ with her.

A．went

B．had gone

C．would go

D．would have gone

在“俾厥土宇，用能康宁”中，“用”之义为（）

A.因此；由此

B.用来；以便

C.作用；功用

D.因为

何谓过期妊娠?有哪些生长模式?

日本血吸虫对人的危害主要是由于虫卵

A．沉积在组织、器官中压迫周围组织

B．机械性阻塞血管

C．虫卵死亡后造成周围组织的变态反应

D．作为异物，刺激周围组织发生炎症

E．分泌的可溶性虫卵抗原导致虫卵肉芽肿