Giải phương trình: \(2{x^2} + \left( {\sqrt 3  - 2} \right)x - \sqrt 3  = 0\)  
A.\(\left\{ {-1;\dfrac{{ - \sqrt 3 }}{2}} \right\}\).
B.\(\left\{ {1;\dfrac{{ - \sqrt 3 }}{2}} \right\}\).
C.\(\left\{ {1;-\dfrac{{ - \sqrt 3 }}{2}} \right\}\).
D.\(\left\{ {-1;-\dfrac{{ - \sqrt 3 }}{2}} \right\}\).

Population growth rates vary among regions and even among countries within the same region.
A.fluctuate
B.restrain
C.stay unchanged
D.remain unstable

I. Choose the word whose main stress is placed differently from the other three in each of the following questions. 
A.inspiration
B.capacity
C.disappearance
D.reputation

Where did Italian women apply lead powder?
A.In their hair
B.On their faces
C.On their hands
D.Under their arms

Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
This has been a challenging time for us all.
A.interesting
B.successful
C.strange
D.difficult

A.effect
B.enter
C.restore
D.engage

“Would you like to come to my birthday party, Mary?” said Mike.
A.Mike didn’t know that Mary had come to his birthday party.
B.Mike asked Mary if she didn’t like to come to his birthday party.
C.Mike invited Mary to come to his birthday party.
D.Mike was told to come to Mary’s birthday party.

Tập hợp \(A = \left( { - \infty ;\,\,2} \right] \cap \left( { - 6;\,\, + \infty } \right)\) là tập nào sau đây?
A.\(\left( { - 6;\,\,2} \right]\)
B.\(\left( { - 6;\,\,2} \right)\)        
C.\(\left( { - \infty ;\,\, + \infty } \right)\)            
D.\(\left[ { - 6;\,\,2} \right]\)

Which of the following statements is supported by the passage?
A.A good scientist needs to be creative.
B.It is better to revise a hypothesis than to reject it.
C.Theories are simply imaginary models of past events.
D.A scientist's most difficult task is testing hypotheses.

Meeting you ________ a good chance.
A.is
B.are
C.were
D.have been