题目选项分析

By using a process called echolocation to analyze the echoes of the high-pitched sounds they produce, batscan determine not only the distance to an object, but they also can determine its shape and size and the direction in which it is moving.

By using a process called echolocation to analyze the echoes of the high-pitched sounds they produce, batscan determine not only the distance to an object but also its shape and size and the direction in which it is moving.