患者,男,69岁。近2个月出现中上腹持续性隐痛,伴腰背部痛,前倾位或俯卧位时疼痛减轻,最可能的诊断是
A. 胃黏膜脱垂
B. 消化性溃疡
C. 胰体癌
D. 胆囊炎
E. 慢性胃炎
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I don't care () we are invited to the dinner or not.
A. if
B. that
C. whether
D. what
把大班上课、小班讨论、个人独立研究结合在一起,并采用灵活的时间单位代替固定制的上课时间的班级组织形式是( )
A. 特朗普制
B. 文纳特卡制
C. 道尔顿制
D. 协同教学
—You have decided to visit the Great Wall on Sunday, right —______.
A. OK
B. You said it
C. Not at all
The parents are always proud ______ their children.
A. to
B. for
C. of