皮肤全层坏死为褥疮第二度。()
参考答案：错
—Were you pleased with her answer?
--Not at all. In fact it couldn’t have been______.
A．worse
B．so better
C．better
D．the worst
世界上第一台计算机是（）年由美国的宾夕法尼亚大学研制成功的。
A.1947
B.1915
C.1946
D.1942
