题目

短文填空 请认真阅读下面短文，并根据各题所给的首字母提示，写出一个适合的英语单词完整、正确的形式，使短文通顺。    A young man wanted to know how to be a good farmer. He went to a teacher who agreed to help. Every day for a month, he sat by the teacher, who t   1    about farming for eight h   2    . The young man was very bored and felt very disappointed(失望的). Then he went to a   3   teacher. This time the teacher was    d  4  from the first one. He didn’t talk to the young man. The young man sat there ne如图所示，A为静置于地球赤道上的物体，B为绕地球沿椭圆轨道运行的卫星，C为绕地球做圆周运动的卫星，P为B、C两卫星轨道的交点．已知A、B、C绕地心运动的周期相同，且轨道都在赤道平面内，相对于地心，下列说法中正确的是（ ）A．若地球自转加快，A物体将飞离地球向远处运动B．卫星C相对于A是静止的C．可能出现：在每天的某一时刻卫星B在A的正上方D．卫星B在远地点的机械能等于其在近地点的机械能