Trong các phân số sau $ \dfrac{50}{40};\dfrac{60}{48};\dfrac{10}{8};\dfrac{6}{4};\dfrac{15}{12};\dfrac{25}{20};\dfrac{5}{4}. $ Phân số không bằng phân số còn lại là
A. $ \dfrac{5}{4}. $
B. $ \dfrac{10}{8}. $
C. $ \dfrac{15}{12}. $
D. $ \dfrac{6}{4}. $

Cho các phân số $ \dfrac{-9}{39};\dfrac{12}{9};\dfrac{2}{14};\dfrac{-3}{13};\dfrac{-35}{10};\dfrac{5}{3};\dfrac{4}{3};\dfrac{-7}{2} $. Số cặp phân số bằng nhau là
A.1 cặp.
B.3 cặp.
C.2 cặp.
D.4 cặp.

Tập xác định D của hàm số $y={{\log }_{3}}({{x}^{2}}-4x+3)$ là
A.$D=(1;3)$.
B.$D=(-\infty ;2-\sqrt{2})\cup (2+\sqrt{2};+\infty )$.
C.$D=(2-\sqrt{2};1)\cup (3;2+\sqrt{2})$.
D.$D=(-\infty ;1)\cup (3;+\infty )$.

Đa thức A thỏa mãn để $ \dfrac{A}{2x-1}=\dfrac{6{{x}^{2}}+3x}{4{{x}^{2}}-1} $ là
A.$ A=3x $.
B.$ A=-4x $.
C.$ A=2x-1 $.
D.$ A=2x $.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
He may be shy now, but he’ll soon come out of his ______ when he meets the right girl.
A.shed
B.hole
C.shell
D.shoe

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
She _______ me a very charming compliment on my painting
A.paid
B.took
C.showed
D.made

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
“I’m going for an interview for a job this afternoon.” - “Good luck! I’ll keep my _____crossed for you”
A.hands
B.legs
C.arms
D.fingers

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
I’m not surprised that Tom is ill. He’s been _____ for a long time. It was bound to affect his health sooner or later.
A.going to town
B.having his cake and eating it
C.playing with fire
D.burning the candle at both ends

Choose the best answer. Tell me what happened ______ your own words.
A.in
B.on
C.by
D.with

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
I like my new job, the only fly in the ______ is the fact that I have to work every other weekend.
A.fat
B.porridge
C.soup
D.ointment