单项选择题

Questions 11 to 18 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。

A.Parent and child.
B.Boss and employee.
C.Classmates.
D.Teacher and student.
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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.
单项选择题
A.Slavery was abolished.B.The Union was split and the Civil War began.C.The United States of America was founded.D.He was shot to death.
A.Slavery was abolished.
B.The Union was split and the Civil War began.
C.The United States of America was founded.
D.He was shot to death.
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