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 received housing benefit when I was unemployed.

A. out of order

B. out of fashion

C. out of work

D. out of practice

Câu 2: S. Mayo Hospital in New Orleans was so named in recognition of Dr. Mayo’s outstanding humanitarianism.

A. unpopular

B. widespread

C. remarkable

D. charitable

Câu 3: The augmentation in the population has created a fuel shortage.

A. increase

B. necesity

C. demand

D. decrease

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: 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 6: If people’s interference with the environment decreases, more species will survive and produce offspring.

A. children

B. ancestor

C. descent

D. result