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

A. record

B. shine

C. categorize

D. diversify

Câu 1: I am sure that they will be sacked on the spot.

A. employed

B. hired

C. given

D. fired

Câu 2: The journalist refused to disclose the sourse of his information.

A. open

B. reveal

C. shut

D. conceal

Câu 3: At last, we succeeded in persuading those boys and girls to join our picnic.

A. At the end

B. In the end 

C. Lastly

D. Endlessly

Câu 4: This quartet of extraodinarily talented musicians generated a phenomenal number of pieces that won gold records.

A. irresponsible

B. incompetent

C. stupid

D. crazy

Câu 5: In my experience, freshmen today are different from those I knew 25 years ago.

A. first-year students

B. new students

C. new counselors

D. young professors

Câu 6: My parents’ warnings didn’t deter me from choosing the job of my dreams.

A. influence

B. discourage

C. reassure

D. inspire