According to the passage, dogs and cats,A．as well as human beings can not see some colours

The passage is mainly about ______.A．what dogs can do.B．how to keep dogs.C．dogs and their

The writer of the passage probably______.A．prefer dogs to chimpsB．have done more research

What happened to the dog according to the gardener？A．It suffered a lot before death.B．It d

According to the passage， Hitler attempted to 查看材料A

According to the passage, a dog named Rico could______.A．recognize the names of about 500

According to the narrator, which kind of dogs is thought to have a sense of humor？A．St Ber