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: The situation seems to be changing minute by minute.

A. again and again

B. time after time

C. very rapidly

D. from time to time

Câu 2: 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 3: If people’s interference with the environment decreases, more species will survive and produce offspring.

A. children

B. ancestor

C. descent

D. result

Câu 4: The augmentation in the population has created a fuel shortage.

A. increase

B. necesity

C. demand

D. decrease

Câu 5: The journalist refused to disclose the sourse of his information.

A. open

B. reveal

C. shut

D. conceal

Câu 6: The related publications are far too numerous to list individually.

A. much

B. legion

C. few

D. full