Kết quả phép tính $ \dfrac{{{90}^{2}}}{{{15}^{2}}} $ bằng
A. $ 6 $ .
B. $ 26 $ .
C. $ 16 $ .
D. $ 36 $ .

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
We are looking for _______ hotel to spend ________ night.
 
A.a/a
B.the/the
C.the/a
D.a/the

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Anna lives on _________ top floor of _______ old buiding.
A.a/an
B.the/the
C.the/an
D.the/a

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Recently I have seen several air-crash. Therefore, I’d rather travel by …………….
A.train
B.helicopter
C.plane
D.hot air balloon

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
With the existence of flying cars, I think there will be less traffic …………….in the future.
A.cars
B.jam
C.vehicle
D.road

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Do you know how to ……………a horse?
A.ride
B.drive
C.sail
D.fly

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Can you believe that ……………… cars already exist?
A.drivers
B.driver
C.driving
D.driverless

Kết quả phép tính $ {{\left( -\dfrac{2}{3} \right)}^{4}}:{{2}^{4}} $ là
A. $ -\dfrac{1}{81} $ .
B. $ \dfrac{1}{81} $ .
C. $ -\dfrac{1}{9} $ .
D. $ \dfrac{1}{9} $ .

Tổng các giá trị của $ x $ thỏa mãn $ {{\left( x\,+\,\dfrac{1}{2} \right)}^{2}}\,=\,\dfrac{4}{25} $ là
A. $ \dfrac{9}{10} $ .
B. $ -\dfrac{7}{10} $ .
C. $ -1 $ .
D. $ -\dfrac{3}{10} $ .

Giá trị $ x $ thỏa mãn $ {{2}^{x-1}}=\text{ }16 $ là
A. $ 4 $ .
B. $ 5 $ .
C. $ 1 $ .
D. $ 2 $ .