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【简答题】
根据公式填空：x 2 -______+9y 2 =（x-______） 2 ．
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反馈参考答案：
举一反三
【单选题】The field research will take Luffy and Steven about two weeks; it will be a long time _______ we _______ again.
A.
before; met
B.
since; meet
C.
before; meet
D.
since; met
【简答题】Over time Steven Spielberg gained fame as a Hollywood director and became very(成功、出名) in the film industry.
【简答题】Over time Steven Spielberg gained fame as a Hollywood director and became very successful in the film industry. ( )
【单选题】Over time Steven Spielberg gained fame as a Hollywood director and became very successful in the film industry .
A.
definitely
B.
fled
C.
surged
D.
throughout
E.
made it big
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