单项选择题A.Political science.B.Economics.C.Getting an A.D.Political science and economics.
单项选择题A.1,000 years.B.2,000 years.C.3,000 years.D.4,000 years.
单项选择题A.In the student’s own words.B.In direct quotations.C.In short phrases.D.In shorthand.
单项选择题A.Parent and child.B.Boss and employee.C.Classmates.D.Teacher and student.
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.