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

A. variety

B. changes

C. conservation

D. number

Câu 1: 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 2: If people’s interference with the environment decreases, more species will survive and produce offspring.

A. children

B. ancestor

C. descent

D. result

Câu 3: The journalist refused to disclose the sourse of his information.

A. open

B. reveal

C. shut

D. conceal

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: When we went to the airport to see her off, we had a traffic jam.

A. say good bye to her

B. meet her

C. take care of her

D. look for her

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