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【判断题】
若让元素1,2,3依次进栈，则出栈次序1,3,2是不可能出现的情况。()A.
正确
B.
错误
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【简答题】Dick was a sailor on a big ship. It went to Japan and Australia, so Dick was often on the ship for several months at a time. When he woke up in the morning and looked out, he only saw the sea, or some...
【简答题】社会环境一方面是人类精神文明和物质文明发展的标志，另一方面又随着人类文明的演进而不断地丰富和发展，所以，有人把社会环境称为（ ）。
【判断题】In the video, Tim says that when he went to school to get his teaching certificate. he was the only male in that class. All the other students were female, partly because that was for teachers of elem...
A.
正确
B.
错误
【单选题】She went to the hotel to see her friend, only_____ he had gone away. [ ]
A.
to tell
B.
to be told
C.
telling
D.
being told
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【单选题】The scientist told the reporter that only after he went abroad ______ what his motherland meant to him. [ ]
A.
he realized
B.
did he realize
C.
had he realized
D.
he had realized
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