Câu hỏi: The systems caused by ingestion of a harmful chemical must be counteracted within minutes in order to avoid permanent damage to the kidneys and other vital organs.

A. alleviated

B. increased

C. distributed

D. summed up

Câu 1: In the twentieth century, drug markedly improved health throughout the world.

A. supposedly

B. noticeably

C. recently

D. consistently

Câu 2: The event, watched by millions of people all over the country, takes place annually.

A. sometimes

B. once every year

C. regularly

D. smoothly

Câu 3: He made one last futile effort to convince her and left home.

A. favorable

B. difficult

C. ineffectual

D. firm

Câu 4: The ages of the two children put together was equivalent to that of their father.

A. different

B. corresponding

C. unequal

D. temporary

Câu 5: It was boiling yesterday. We have a very humid and dry summer this year.

A. very hot

B. cooking

C. dry

D. cooked

Câu 6: The collapse of the stock market in 1929 signaled the beginning of the Depression.

A. debt

B. rebirth

C. rise

D. failure