皮亚杰认为儿童的思维来自()。
参考答案:主体对客体的动作是主体与客体相互作用的结果
I would love _____ to the party last night but I had to work extra hours to finish a report.
A.to go
B.to have gone
C.going
D.to be going
对急性腹痛发病1周后的胰腺炎,较有诊断价值的是
A.血清脂肪酶增高B.血清淀粉酶增高C.血钙降低D.白细胞增多