Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Chemical engineering is based on (A) the principles (B) of physics, chemists (C), and mathematics (D).
A. on
B. principles
C. chemists
D. mathematics
Kiến thức kiểm tra: Cấu trúc đồng dạng
physics (n): môn vật lí
mathematics (n): môn toán
chemist (n): nhà hóa học
=> Sửa: chemistry (n): môn hóa học
Chọn C