Why does the man know SO much about San Francisco？
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Where did the conversation most probably take place？
The author indicates that____is threatening American political power．
Why does Jack want to leave right away？
地质构造面或倾斜面或倾斜岩层层面与水平面的交线的两端的延伸方向称为（）A．走向B．倾向C．延向D．斜向
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