【判断题】一条曲线以rou为极坐标方程,如果rou(theta)=rou(-theta),说明曲线以2pai为周期
【单选题】----What has made you so happy, Mary?
A.
--Oh, I’ve just ___an old friend I haven’t seen for years.
【单选题】what has made you so happy? Oh, I have just _______an old friend, I haven’t seen him for years
【判断题】一条曲线以rou为极坐标方程,如果rou(theta+3pai)=rou(theta),说明曲线以3pai为周期.
【单选题】What do you think made her so up-set?______________.
D.
Because of losing her bike
【单选题】达·芬奇的名画《最后的晚餐》画在( )旁的修道院餐厅的墙壁上。
【判断题】一条曲线以rou为极坐标方程,如果rou(二分之pai-theta)=rou(theta),说明曲线关于theta=四分之派对称
【简答题】Tu viens _____ Pérou ( 秘鲁 ) .
【判断题】String 代表了字符序列不可变的字符串;而 StringBuffer、StringBuilder 都代表了字符序列可变的字符串。 ( )