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【简答题】
已知抛物线C 1 ：y 2 =4ax（a＞0），椭圆C以为中心，以抛物线C 1 的焦点为右焦点，且长轴与短轴之比为 2 ，过抛物线C 1 的焦点F作倾斜角为 π 4 的直线l，交椭圆C于一点P（点P在x轴上方），交抛物线C 1 于一点Q（点Q在x轴下方）． （1）求点P和Q的坐标； （2）将点Q沿直线l向上移动到点Q′，使|QQ′|=4a，求过P和Q′且中心在，对称轴是坐标轴的双曲线的方程．
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举一反三
【单选题】According to the girl, how many companies called her to have an interview within two weeks?
A.
11.
B.
17.
C.
21.
D.
27.
【单选题】Many companies would prefer to employ people who have gained ______ experience for the work.
A.
practical
B.
suitable
C.
admirable
D.
actual
【单选题】It seems as if many Internet companies such as AT&T WorldNet and Yahoo ______.
A.
have jumped on some kinds of cars or trucks
B.
have begun their v-mail business operations
C.
have started to demonstrate to the public
D.
have begun their musical performance
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