People can often see a talking parrot on a TV show, in a movie, or even in someone's home. The parrot has learned ____ (copy) sounds that people make. Dolphins, bats, and some other animals also copy sounds. Now we can add elephants ____this list of copycats (盲目模仿者).

    Dr. Joyce Poole is an expert,____studies the sounds of elephants. While she was in Kenya, she would hear strange noises ____ (make) by Mlaika after sunset. Mlaika was____ 8-year-old African elephant and it lived near a highway.

    Dr. Poole says that she couldn't tell the ____ (different) between Mlaika's call and the ____ (distance) truck noise. Why did it copy the sounds of the trucks driving by? Animals that are able to copy sounds may enjoy ____(practice) new sounds. When they ____ (keep) outside of their natural environment, they may copy unusual sounds. 

    So far Dr. Poole ____(spend) 18 years with two female Asian elephants. Asian elephants make sounds like birds to talk with one another.

    Parrots, dolphins, humans, and elephants show that being a copycat is one way that animals and people make new friends and keep old ones.

“Are you really an artist?” Felix asked ____ (curious).

如图：两个球靠在一起，看似很紧，其实接触的只是一个点，不够紧密；如果两个球都削去一片，接触的就是一个面，会十分紧密。在一个团队中，如果每一个人都是“圆球”，那么就永远融合不到一起。这启示我们要想合奏好生活的乐章，就要（    ）

①善于团结合作

②敢于直面竞争

③处理好理想与现实关系

④处理好个人与集体关系