Question

这个英语题为什么选b不选a

During the flight to the Moon,Chang'e-1 Satellite( )adjusts her direction so that she can go into her programmed orbit and then circle around it at the most appropriate angle.
A eventually
B gradually
C constantly
D continuously

Answer 1

此题为副词辨析，应考虑句意进行选择。Chang'e-1 Satellite( )adjusts her direction 后有一个重要句型“so that...”该句型常表示目的，所以根据句意来填充答案“嫦娥一号卫星（ ）调整它的方向，以便于能够进入预定轨道，以最合适的角度环绕月球飞行。”A选型表示结果“最后，终于”B选项表示过程“逐渐的，渐渐的 ”所以答案就很明显了。

Answer 2

嫦娥一号应该是“逐渐”调整它的航线以致进入预定轨道。