已知点，若轴上的点满足的斜率是斜率的2倍，则点的坐标为_________.
Drinking too much juice can be （有害的） to people's teeth．
The use of new energy cars helps to reduce air （污染）．
There will be a high﹣speed railway， （在……之间）Ningbo and Zhoushan．
The （努力）you work， the more progress you'll make．
April is the f month of the year．
，若
轴上的点
满足
的斜率是
斜率的2倍，则
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