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Number (2): Everything in this space must add up to 2. The answer is 1-0, placed vertically; 6-2, placed vertically.
，这一点在一键获取谷歌浏览器下载中也有详细论述
公式： f(x)=max(0,x)
Immigration boosts innovation and wages in the US. The positive dynamic impact of immigration on innovation and wages dominates the short-run negative impact of increased labor supply. Increased immigration to the US since 1965 is estimated to have increased innovation and wages by 5%.