Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPPOSITE in meaning to underlined word(s) in each of the following questions
Scientists proof that choosing a career for money will make you less efficient, happy and more selfish
A. effective
B. ineffective
C. capable
D. proficient
Chọn B
Efficient = hiệu quả, năng suất -> trái nghĩa: ineffective = không hiệu quả