ACCORDING TO THE PASSAGE, DR. READER AND HIS TEAM HAVE FOUND THAT_...

39. According to the passage, Dr. Reader and his team have found that_________.

A. People tend to make as many online friends as they can.

B. Nine out of ten people considered as close friends as those having face-to-face contacts.

C. People only want to keep the conventional number of online friends.

D. Many people agree to make close friends online because it is easy to keep touch with

them.