题目:
已知双曲线y2-x2=1的离心率为e,且抛物线y2=2px的焦点坐标为(e2,0),则p的值为( )
A.-2
B.-4
C.2
D.4
答案:
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One possible version:Dear editor:Last week, we held many different activities in our school. On Tuesday, Grade Seven students had a singing competition. The team of Class...