世界上第一台电子数字计算机是()。
A.ltair8800
B.ENIAC
C.IBM
D.APPLE
参考答案:B
In the dream Peter saw himself ________ by a fierce wolf, and he woke up with a start.[ ]
A. chased
B. to be chased
C. be chased
D. having been chased
以“所有P是M,所有S不是M”为前提进行三段论推理,可必然推出()。
A.SEP
B.SAP
C.SIP
D.SOP
E.没有S不是P