Câu hỏi: The Bali Tiger was declared extinct in 1937 due to hunting and habitat loss.

A. reserve

B. generation

C. natural environment

D. diversity

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

A. supposedly

B. noticeably

C. recently

D. consistently

Câu 2: 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 3: Many political radicals advocated that women should not be discriminated on the basic of their sex.

A. openly criticized

B. rightly claimed

C. publicly said

D. publicly supported

Câu 4: 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 5: 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 6: The twins look so much alike that no one can tell them apart.

A. distinguish between them

B. point out with them

C. spoil them

D. pick them out