A.\(2{t^2} - 3 = 0\).
B.\({t^2} + t - 3 = 0\)
C.\(4t - 3 = 0\)
D.\({t^2} + 2t - 3 = 0\).

A.\(\int {\cos 3xdx = 3\sin 3x + C} \).
B.\(\int {\cos 3xdx = \dfrac{{\sin 3x}}{3} + C} \).
C.\(\int {\cos 3xdx =  - \dfrac{{\sin 3x}}{3} + C} \).
D.\(\int {\cos 3xdx = \sin 3x + C} \).

A.\(z =  - 2 + 3i\).
B.\(z = 3i\).
C.\(z =  - 2\).
D.\(z = \sqrt 3  + i\).

A.Hàm số có ba điểm cực trị.
B.Hàm số có giá trị cực đại bằng 3.
C.Hàm số có giá trị cực đại bằng 0.
D.Hàm số có hai điểm cực tiểu.

A.Acupuncture – the best therapy
B.People using plants for healing the injuries
C.Two forms of alternative therapies in the West
D.Western medical techniques are improved

A.the reaction time is faster for acupuncture than for herbal therapy
B.herbs are excellent way of increasing a person’s endurance
C.it is used as a preventative form of therapy for healthy people
D.it is beneficial to the circulatory system and blood pressure problems

A.the ear
B.the activating point
C.the nerve point
D.the flow of blood

A.safely
B.barely
C.intentionally  
D.exclusively

A.It constantly runs through the various blood vessels of the body
B.It is the basis upon which the method of acupuncture was devised
C.It is an invisible force that blocks the pathways of the body
D.It stimulates certain pathways in the body and relieves pain

A.basis
B.relief
C.symptom
D.application