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.
Question. Scientists hope that this new drug will be a major breakthrough in the fight against AIDS.
A. new cure
B. important therapy
C. sudden remedy
D. dramatic development
Đáp án D
Breakthrough = dramatic development (phát triển mạnh mẽ, bùng nổ)