People tend to become more personal and hide much more of themselves when u________ e-mail. Researchers from Open                         1._____________ University in Britain have f________ in a recent study that there                      2._____________ are good reasons ________ this. The researchers asked 83 pairs                   3._____________ of students, all strangers to one another, to s________ a problem.                  4._____________ They had to discuss this question: If ________(仅仅) five people                   5._____________ in the world could be saved from a world disaster, w________ should           6._____________ they be? The pairs of students had to talk over the problem ________           7._____________ face to face or by computers. Dr. Johnson said, 'They told their________ (搭档) four times as much about themselves when they talked                        8._____________ over the Internet ________ when they talked face to face. When the              9._____________ computers were fitted with cameras so that students could see eachother, this ________(限制) the personal side of the conversation.'                          10._____________