Câu hỏi: All classifications of human societies and cultures are arbitrary.

A. useful

B. haphazard

C. insufficient

D. ambiguous

Câu 1: It was boiling yesterday. We have a very humid and dry summer this year.

A. very hot

B. cooking

C. dry

D. cooked

Câu 2: The collapse of the stock market in 1929 signaled the beginning of the Depression.

A. debt

B. rebirth

C. rise

D. failure

Câu 3: Once in a while I visit my grandparents on the farm and stay there for some days.

A. Regularly

B. Sometimes

C. Usually

D. Rarely

Câu 4: The real meaning of the poem was obscured by the pretentious language in which it was written.

A.  exposed

B. apparent

C. hidden

D. shown

Câu 5: In the twentieth century, drug markedly improved health throughout the world.

A. supposedly

B. noticeably

C. recently

D. consistently

Câu 6: The shoplifter immediately admitted to her crime to the security guard.

A. Agreed

B. Pleased

C. Denied

D. confessed