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

A. favorable

B. difficult

C. ineffectual

D. firm

Câu 3: The collapse of the stock market in 1929 signaled the beginning of the Depression.

A. debt

B. rebirth

C. rise

D. failure

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: The purpose of this survey is to determine students’ attitudes toward love and marriage.

A. find out

B. develop

C. concern

D. build

Câu 6: The repeated commercials on TV distract many viewers from watching their favorite programmes.

A. advertisements

B. contests

C. economics

D. businesses