“What! You, too? I believed I was the only one. ’’ Have you ever said anything like this to someone? 【小题1】

It seems that similarity（相似）often helps form friendship. A great thinker Aristotle once said, ‘‘People regard friendship as a matter of similarity, they say that we love those who are like ourselves. 【小题2】 American scientists from the University of California have said friends have similar behaviors. They invited 42 university students to take part in a test. Each student watched the same set of videos, which included a comedy, a discussion and a soccer match. 【小题3】 According to their scans（观察）, friends who watched the same video reacted（反应）in similar ways. Similar parts of their brains lit up while watching the videos, especially parts that are related to motivation（动机）, learning and memory. 【小题4】

“Seeing one’s friends with similar behaviors will reinforce（强化）one’s own values, opinions, and interests, ’’ said a lead scientist. 【小题5】 Scientists from the University of Leipzig, Germany, have found that friendship is also based on how physically close you are to someone. The scientists did a test with first-year college students the first time they met in class. In this test, students who sat in neighboring seats were more likely to become friends.

根据短文内容, 将下面句子还原到文中空白处, 使短文内容完整、通顺（每个选项只能用一次）。

A．Now, there is some science behind this idea.

B．If so, you may become friends with this person.

C．But brain similarity is not the only thing that can help form friendship.

D．However, people who weren’t friends had different reactions（反应）to the same videos.

E．At the same time, scientists scanned their brains and recorded their brain activity.