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问题
选择题
Show me _______ big letter "A".
A. the
B. THE
C. a
D. an
答案
答案:
C
解答题
在△ABC中,已知(a
2
+b
2
)sin(A-B)=(a
2
-b
2
)sin(A+B),判断△ABC的形状.
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选择题
Do you still remember ber?________her as much as I do now for a long time.
A.haven’t missed
B.don’t miss
C.am not missing
D.didn’t miss
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