题目内容：
椭圆的长轴是短轴的二倍，则椭圆的离心率是
A．1/2 B．
C．
D．
参考答案：
答案解析：
单选题：椭圆的长轴是短轴的二倍，则椭圆的离心率是
- 题目分类：文科数学
- 题目类型：单选题
- 查看权限：VIP
B．
C．
D．
B．
C．
D．
The baby seemed to be__________at the sight of the TV set.(
The baby seemed to be__________at the sight of the TV set.( )A．excited B．surpris
( ) The story was said to have been based on the information
( ) The story was said to have been based on the information from a reliable____
In the article, the author says a little about __________ (
In the article, the author says a little about __________ ( )A．black--market fur
In 1939 two brothers, Mac and Dick McDonald, started a drive
In 1939 two brothers, Mac and Dick McDonald, started a drive-in restaurant in Sa
第24题应填入( )
第24题应填入( )A．people B．workers C．scientists D．doctors