and telephone number.

Age between 18-35 years old

Native North American English speakers

Normal hearing and no history of mental and neurological disorder

Right-handedness

Lab：514-398-4400 Ext. ：00010

21. To meet the requirements for the EEG experiment, you should be .

　　A. between the ages of 18-25

B. 1eft-handed with normal hearing

C. healthy and able to work about 4-5 hours

D. a female native Canadian English speaker

22. What will the CASC Lab expect participants to do?

A. To complete a detailed online questionnaire.

B. To do an interview about social communication.

C. To ask some friends to do an online questionnaire.

D. To judge audio and video clips showing social interactions.

23. If you want to be paid best per hour, you should contact .

　　A. 514-398-3725 B. 514-398-4400 Ext. ：00010

　　 C. case. mcgill @gmail. com D. pell. lab@gmail. com

　　Public bookshelves are appearing across Germany on street corners, city squares and in suburban supermarkets. In these free-for all-libraries, people can grab whatever they want to read, and leave behind anything they want for others. There's no need to register, no due date, and you can take or give as many as you want. "This project is aimed at everyone who likes to read. It is open for everybody, ''Michael Aubermann, one of the organizers of the free book exchange said.

The western city's latest public shelf was put up next to Bayenturm. It is the fourth free shelf that Aubermann's group, the Cologne Citizen's Foundation, has placed outside. "We set up our other outdoor shelves last year and they have been working really well, "said Aubermann. The public bookshelves, which are usually financed by donations and cared for by local volunteer groups, have appeared independently of each other in many cities, suburbs and villages. Each shelf holds around 200 books and it takes about six weeks for a complete turnover, with all the old titles replaced by new ones.

Even commercial book stores and online book sellers seem to support the idea of free book exchanges. "We see this project as a sales promotion rather than competition." said Elmar Muether. "If books are present everywhere, it helps our business, too. "

So far, the Cologne book group has had few problems with damage or other problems. Aubermann said, "Propaganda(宣传)is the only kind of literature we do not allow here. "

　　At another bookshelf in the Bayenthal neighborhood, the lower shelves are reserved for children's literature only. "It is important that we make it easy for everyone to participate in this 'reading culture on the street'-from old readers to kids to immigrants, " Aubermann said.

While most of the shelves have so far been put up in upscale neighborhoods, Aubermann and the 20 volunteers who help look after the project are planning to put up