已知,
+
=0,则
=( ).
![](https://img.xkw.com/dksih/QBM/2015/4/1/1573828109017088/1573828114472960/STEM/4f576d7a29764febb68c531fc3fb700f.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1573828109017088/1573828114472960/STEM/23d351ff02f940b4a960eb88308f58e9.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1573828109017088/1573828114472960/STEM/4afbdf4f94e34d8fbfebb93bb4a47b2b.png)
A.1 | B.-2013 | C.-1 | D.2013 |
更新时间:2016-12-05 23:44:24
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【推荐1】已知
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【推荐2】如果
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【推荐1】下图为洪涛同学的小测卷,他的得分应是( )分.
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A.![]() | B.![]() | C.![]() | D.![]() |
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