为了在运行下面的程序后得到输出y=9,则应该输入 ( )
![](https://img.xkw.com/dksih/QBM/2017/12/6/1832487544070144/1834558631313408/STEM/82941471-a285-4941-9859-6355ef8d2f3d.png?resizew=139)
![](https://img.xkw.com/dksih/QBM/2017/12/6/1832487544070144/1834558631313408/STEM/82941471-a285-4941-9859-6355ef8d2f3d.png?resizew=139)
A.x=-4 | B.x=-2 |
C.x=4或x=-4 | D.x=-2或x=2 |
更新时间:2017-12-09 08:42:00
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【知识点】 根据条件语句计算输入、输出值解读
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单选题
|
较易
(0.85)
【推荐1】如图所示,当输入
,
的值分别为4,3时,最后输出的
的值是
![](https://img.xkw.com/dksih/QBM/2020/3/1/2410340362731520/2412151347806208/STEM/552a8b8b40f74cb2b80510941fca045f.png?resizew=117)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2020/3/1/2410340362731520/2412151347806208/STEM/552a8b8b40f74cb2b80510941fca045f.png?resizew=117)
A.4 | B.3 | C.2 | D.1 |
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单选题
|
较易
(0.85)
【推荐2】若下图程序输出y的值为3,则输入的x的值为( )
INPUT x
IF x>=0 THEN
y=x^2-1
ELSE
y=2*x^2-5
END IF
PRINT y
END
INPUT x
IF x>=0 THEN
y=x^2-1
ELSE
y=2*x^2-5
END IF
PRINT y
END
A.2 | B.-2 | C.2或-2 | D.8 |
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