A vertical angle is an angle in a vertical plane which referenced to a horizontal line by plus or minus angles, or to a vertical line from the zenith direction.
【简答题】阅读理解。 Confucius (孔子) was born five hundred and fifty years before Christ. Unlike Jesus Christ, he did not bring words of God to the people. He was a clever teacher and a philosopher, looking for truth...
【简答题】If Confucius(孔子)were still alive today and could celebrate his September 28 birthday with a big cake, there would be a lot of candles(蜡烛). He’d need a fan or a strong wind to help him put them out. Wh...
【简答题】If Confucius(孔子)were still alive today and could celebrate his September 28 birthday with a big cake, there would be many candles. He’d need a fan or a strong wind to help him put them out. While many...