患者男性，25岁，右下腹痛、腹泻3个月，糊样便无黏液及脓血，查体可及右下腹肿物，X线示回肠末端和近段结肠铺路石样改变，纵行溃疡。诊断最可能是（）
A. Crohn病
B. 溃疡性结肠炎
C. 肠结核
D. 肠穿孔
E. 中毒性巨结肠
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______from space, our earth, with water covering 70% of its surface, appears to be a blue ball.
A. Seen
B. Seeing
C. Having seen
D. To see
下列有关硝普钠的叙述中，错误的是
A. 有迅速而持久的降压作用
B. 对小动脉和小静脉均有明显的舒张作用
C. 降压时不影响肾血流量
D. 能抑制血管平滑肌细胞外钙离子往细胞内转运
E. 可用于充血性心衰的治疗
I tried to be interested in what he was saying, but the more he talked______.
A. the more bored became I
B. the more bored I became
C. the more I become bored
D. I became the more bored
原发性肝癌最常见的转移途径（）
A. 淋巴道
B. 肝动脉
C. 肝门静脉
D. 肝静脉
E. 肺
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