问题
选择题
| — How do you find the match between Spain and Switzerland? — _____ Powerful Spain lost the game by 0-1. |
A. I watched it on TV B. It's amazing! C. You guessed it! D. Congratulations! |
答案
答案：B
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，其中D为直线y=x-4与曲线y2=2z所围成的区域。