4 a( `$ F- Y" i: ?7 [8 Y! e1. Laughing out loud can not only make you feel good but also strengthen your immune system.% x* e) b& T# E# e
2.A study found out that a person who enjoys laughing seems more easy to get along with.
# T* d. h. C, \+ f3.The investigators find that laughing out loud can effectively ease the pain." k7 [8 w1 Y2 ]- ^& J+ N. _* \
4.It was found out that laughing 100 times a day makes the same effect with rowing a boat for 10 minutes.* U: K* n8 k8 @6 R' ]2 s
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楼主: IELTS哥
