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._____________