1 . Those who are addicted to computer games suffer a lot. They can’t focus on their job for a long time. In other words, they lose the ability to c______. (根据首字母单词拼写)

2 . From facts, scientists have 　　　 that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.

A．confirmed	B．concluded
C．concentrated	D．centered