单项选择题

A．Music they like can relieve depression but distract attention.
B．Music they like can reduce stress and improve concentration.
C．Classical music and rock-and-roll increase their heart rate and expand the breathing.
D．Wearing headphones can help concentrate when they are performing operations.
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单项选择题
A．An essay.B．A magazine article.C．A poem.D．A short story.
A．An essay.
B．A magazine article.
C．A poem.
D．A short story.
单项选择题
A．It changes the body’s metabolism through rapid weight gain.B．It tricks the body into responding as if it were in a different time zone.C．It promotes increased alertness by adding snacks to the diet.D．It builds resistance to illness by increasing intake of vitamins.
A．It changes the body’s metabolism through rapid weight gain.
B．It tricks the body into responding as if it were in a different time zone.
C．It promotes increased alertness by adding snacks to the diet.
D．It builds resistance to illness by increasing intake of vitamins.
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