It is the experience he had as a boy ______ has formed his present personality.

A．that

B．what

C．which

D．who

左侧卧位可以使腹痛减轻的是

A．急性胰腺炎

B．胰体癌

C．胃黏膜脱垂

D．反流性食管癌

E．十二指肠壅滞症