阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
Contrary to popular belief，looking at someone's face alone is not enough to tell us whether they are roaring in celebration or screaming in frustration，researchers claimed. While people may believe they have the ability to read each other's faces，body language is the real clue that shows whether strong emotions someone is feeling are positive or negative.
In a study，groups of participants were shown a series of facial expressions such as tennis players photographed just after winning or losing a point.
In some cases the volunteers were able to see the player's full body，but in others they were only shown either their face or their body with the other removed.
Participants could clearly tell whether the players were winning or losing when they were shown the full picture or just the body，but their guesses were no better than chance when based on the face alone.
Those who were allowed to see the full image were convinced they had made their judgment based on the players' facial expressions even though results from the two other groups suggested otherwise.
The researchers carried out a second study where participants were shown a wider range of faces showing emotions including joy，pleasure，victory，pain and defeat.
