We often think humans are special because we can show many feelings. The large hairy bees called bumblebees can do this too. Do you want to know more? ____1____

In the study, researchers found that good moods can be spread even among insects with small brains. ____2____ The bee felt happy and changed its behaviour with the sugar water. It became more willing to land on different types of flowers. Other bees nearby also began acting more cheerfully, even though they didn’t get any sugar water.

____3____ To answer this question, the research team did many “isolation (隔离)” tests. With special tools, they isolated the possible signal channels (信号通道) of the bees one by one, including those for smelling, touching and seeing. ____4____ When a bee watches a “happy” bee fly actively, it will become happy too. If they are prevented from seeing each other, the happy moods will be completely cut off—even when the two bees are very close.

The finding shows bees can understand others’ positive feelings. This is called positive affective cognition (积极情感认知). ____5____ Before this study, we didn’t know insects like bees could do this.

So, when we see a bee flying around in the garden, it might be spreading more than just pollen (花粉)—it could be spreading joy!

A. They gave some sugar water to one bee.

B. Here is a study about these bumblebees.

C. It’s often seen in animals with bigger brains.

D. Why did the bees nearby act that cheerfully?

E. At last, they found bees spread happiness by seeing.

F. Positive feelings aren’t the best choice when bees communicate.

1.1.

A

B

C

D

解析：选B。引入过渡句。解析：前文抛出疑问，大黄蜂也拥有情绪，想了解更多？B 引出下文的科学研究，开启实验介绍。

2.2.

A

B

C

D

解析：选A。实验过程句。解析：后句写蜜蜂喝到糖水变得开心，A 交代实验操作：给一只蜜蜂糖水，承接实验流程。

3.3.

A

B

C

D

解析：选D。设问总起句。解析：上段现象：没吃到糖水的周边蜜蜂也变得欢快；本段开展隔离实验寻找原因。D 提出疑问，引出下文实验探究。

4.4.

A

B

C

D

解析：选E。实验结论句。解析：前文讲逐一隔离嗅觉、触觉、视觉通道；后文说明看不见对方，情绪就无法传递。E 给出实验结果：蜜蜂依靠视觉传递快乐。

5.5.

A

B

C

D

解析：选C。补充说明句。解析：前句提出概念 “积极情感认知”；后句 “在此研究前我们不知道蜜蜂也能做到”。C 说明该现象以往多见于大脑更大的动物，形成前后对比。