Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions
Today’s scientists have overcome many of the challenges of the depth by using more sophisticated tools
A. complicated
B. worldly
C. experienced
D. aware
Đáp án : A
Sophisticated = phức tạp, tinh tế công nghệ cao ≈ complicated