Câu hỏi: An international medical conference initiated by Davison resulted in the birth of the League of Red Cross Societies in 1991.

A. treated

B. dedicated

C. helped

D. started

Câu 1: 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 2: She came to the meeting late on purpose so she would miss the introductory speech.

A. aiming at

B. intentionally

C. reasonably

D. with a goal

Câu 3: 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 4: Professor Berg was very interested in the diversity of cultures all over the world.

A. variety

B. changes

C. conservation

D. number

Câu 5: The augmentation in the population has created a fuel shortage.

A. increase

B. necesity

C. demand

D. decrease

Câu 6: 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