Work efficiency has increased exponentially each year, thanks to computers and their

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Mark the letter A,B,C or D on your answer sheet to indicate the word that is CLOSEST in meaning to the underlined part in each of the following questions.

Work efficiency has increased exponentially each year, thanks to computers and their ability to multitask

at a very fast rate

slightly

constantly

at a very slow rate

Giải thích

Đáp án : A

exponentially : theo số mũ = at a very fast rate

At a very fast rate: rất nhanh >< at a very low rate

Slightly: nhẹ, constantly : liên tục