【单选题】下列哪种元素在强酸性土壤上的有效性低 。
【简答题】Translation: Success moving through the odyssey years will come to those who don’t expect to achieve their goals right away but know that they must have the strength, capacity and confidence to endure...
【单选题】幻灯片放映时,按( )键可以终止幻灯片放映。
【判断题】任何数列都可能存在单调子列,也可能不存在单调子列。
【单选题】Why does Colonel Ludlow move his families to a remote part of Montana?
A.
Because he dreams a better life in the mountainous area.
B.
Because he is tired of the fact that the American government betrays the Native Americans.
C.
Because the Native Americans betrays the American government.
D.
Because there are more business opportunities.
【简答题】Why does Colonel Brandon tell his story to Elinor?