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: In times of war, the Red Cross is dedicated to reducing the sufferings of wounded soldiers, civilians, and prisoners of war.

A. initiated

B. appalled

C. devoted

D. mounted

Câu 3: 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 4: Childbearing is the women's most wonderful role.

A. Giving birth to a baby

B. Bring up a child

C. Educating a child

D. Having no child

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

A. variety

B. changes

C. conservation

D. number