【单选题】在月相中,把农历初一或初二的月亮称之为( )
【单选题】Dr. White was away to the South last month,so he didn't attend the meeting _______ in Beijing.
【简答题】已知直线 的斜率为 ,直线 经过点 ,且 ,则实数 的值为 ▲ .
【简答题】已知直线 的斜率的范围是 ,则该直线倾斜角的范围是
【单选题】Fill in the blank He was ______________ when he discovered that he didn’t have enough money to pay for the red wine he had ordered.