慢性支气管炎与肺癌的主要鉴别依据是（）
A．发热
B．咳嗽
C．咯血
D．肺部啰音
E．痰液检查
参考答案：E
________ excited Geoff Marcy most was whether there were planets in other solar system where life might exist.
A．It
B．That
C．What
D．Why
岩石性质对钻井的影响主要表现在哪些方面？
