绿色开花植物在完成受精作用后，所形成的受精卵将发育成[ ]
A．种子
B．种子的胚
C．果皮
D．果实
答案：B
— Mom, I haven't seen my aunt for a long time.
— ______________ [ ]
A. It is not my concern
B. How dare you think so?
C. Why not visit her this weekend?
D. I couldn't agree more.
男性，62岁，患胃溃疡多年，近年来上腹痛发作频繁，无规律，体重减轻，营养不良，胃钡餐透视见有龛影。该病人最需要进行的检查为
A．粪便隐血实验
B．胃酸测定
C．胃镜和细胞学检查
D．腹部B超
E．ERCP
