Logo
Câu hỏi
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.
Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

Đáp án đúng là: C