A scrub jay can remember when it cached a particular piece of food in a particular place, researchers have discovered, and tend not to bother to recover a perishable treat if stored long enough to have rotted. A. tend not to bother to recover a perishable treat if B. they tend not to bother recovering a perishable treat C. tending not to bother to recover a perishable treat it D. tends not to bother recovering a perishable treat E. tends not bothering to recover a perishable treat it tend在此处于can平行? 这个句子应该怎么解释啊~? |