单项选择题
1、



2、 若双曲线的两准线问的距离等于它的半焦距，则双曲线的离心率为    (    )
A．√2    
B．2    
C．1    
D．以上都不对


3、 若-1，a，b，c，-9五个数成等比数列，则 (  )
A．b=3，ac=9
B．b=-3，ac=9
C．b=-3，ac=-9
D．b=3，ac=-9


4、 新文化运动兴起的标志是（　　）
A．鲁迅发表《狂人日记》
B．李大钊发表《庶民的胜利》
C．胡适发表《文学改良刍议》
D．陈独秀创办《青年杂志》


5、 I don' t think this film is by far the most boring． I have seen
A．better
B．worse
C．the best
D．the worst


6、 We forbid__________ here． Who has allowed you__________ here?
A．smoke ; smoking
B．smoking; to smoke
C．smoking; smoking
D．to smoke ; smoking


7、 We'll have a picnic in the park this Sunday __________ it rains or it's very cold.
A．since
B．if
C．unless
D．until

8、 You __________ be hungry already --you had lunch only two hours ago!
A．wouldn't
B．can't
C．mustn't
D．needn't


9、 __________ he is thinking about now is not her health, but her safety.
A．That
B．What
C．Whatever
D．Which


简答题
10、已知抛物线经过点(2，3)，对称轴方程为x=1，且在x轴上截得的弦长为4，试求抛物线的解析式．

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