原题
录音 1
What point does the speaker make about three-plated robot grippers?
AThey are not very easy to use.
BThey are mostly useful for picking up and carrying flat items.
CTheir design is based on an activity observed in ants.
DTheir plates usually have at least one curved edge.
正确答案：A
解题思路
老师暂未填写解题思路。