《2025年同步练习册山东人民出版社高中英语选择性必修第一册外研版》

Ⅲ. 七选五(共 5 小题;每小题 2.5 分,满分 12.5 分)
Smiling Is a Stress Reliever
A University of Kansas study found that participants who were asked to smile during stressful tasks had lower heart rates during stress recovery. So it seems even forcing yourself to look happy helps manage tricky situations.
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The fact smiling reduces your heart rate when you're stressed is also likely to have a knock-on effect on blood pressure. Other research has shown blood pressure doesn't rise when people are exposed to humour.
Beaming (笑容满面) boosts immunity.
A smile releases certain hormones in the brain, including serotonin (血清素), which is associated with an improvement in immune function. 37 Depression, on the other hand, can weaken your immune system.
A smile can relieve your pain.
Being amused also prompts the release of endorphins (内啡肽) in the brain. 38 In one study, participants who smiled while being injected reported 40% less pain than those holding a neutral expression.
Looking happy encourages positivity.
39 A 2022 study of 3, 878 participants in 19 countries found people's happiness rating was higher when they smiled.
Smiling makes you welcome to others and helps you connect with them.
Fortunately, with enough practice, smiling can become an automatic behavior. You can use certain situations as cues to smile. You might remind yourself to smile when you hear someone laugh or while you're in the process of making tea. You could set a note on your phone to help remember to smile. 40
A.Smiling can reduce heart rate.
B.Smiling may lower blood pressure.
C.They are the body's natural painkillers.
D.Study found that smiling can make one live longer.
E.So, if you want to stay well, you should smile more.
F.Smiling can boost mood, not just a response to happiness.
G. Thinking of a favorite person or happy memory can make you smile too.

答案： 36~40 BECFG