A. the first scientist believed B. the first scientist to believe C. a first scientist believing D. a first scientist believedĐoạn văn13/83Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 13 to 18. the first scientist believed the first scientist to believe a first scientist believinga first scientist believedGiải thíchChọn đáp án B