Thanks for your reply.
I'm using Version 17.1.0 (64-bit) - basically CS6.
Operating system is Windows 8.1. Installed is the simplied Chinese language package.
I have received the text in a Word document. It contains mixed characters, something like this:
教授资料
学术背景：
博士；曾于波恩大学（Rheinische Friedrich-Wilhelms-Universität Bonn）、台湾师范大学、
I have tried to paste it in the two following ways:
1) to create a text box and paste the text. The result is that some of the characters are not showed correctly.
2) Paste it directly without any preparation. This result into a single "image" or group of images. I can cancel modify each character one at a time, or I can dissolve the group, but the result is the same.