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【单选题】
设θ是三角形的一个内角，且 sinθ+cosθ= 1 5 ，则方程x 2 sinθ-y 2 cosθ=1表示的曲线是（ ）A.
焦点在x轴上的双曲线
B.
焦点在x轴上的椭圆
C.
焦点在y轴上的双曲线
D.
焦点在y轴上的椭圆
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反馈参考答案：
举一反三
【单选题】What was the direct connection between members of the speaker's family and Shakespeare?
A.
They owned Shakespeare's birthplace.
B.
They went to Shakespeare's old school.
C.
They lived near Shakespeare's house.
D.
They shared Shakespeare's first name.
【单选题】The column mentioned by Dr. Whittaker__________
A.
was part of the building close to the World Trade Center
B.
was part of the World Trade Center
C.
was shot through the window and the floor of the World Trade Center
D.
damaged many buildings in the vicinity of the World Trade Center
【单选题】What was the name of the London theatre that Shakespeare is commonlyassociated with?
A.
The World's Theatre
B.
The Orb Theatre
C.
The Globe Theatre
D.
The Theatre
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