Đề thi thử thpt quốc gia 2019 môn tiếng anh (Đề số 12)

Determining the mineral content of soil samples is an exacting process; _____________ , experts must perform detail tests to analyze soil specimens.

18/50

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Determining the mineral content of soil samples is an exacting process; _____________ , experts must perform detail tests to analyze soil specimens.

therefore

afterward

so that

however

Giải thích

Đáp án A