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: 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 2: The situation seems to be changing minute by minute.

A.  from time to time

B. time after time

C. again and again

D. very rapidly

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

A. favorable

B. difficult

C. ineffectual

D. firm

Câu 4: When I mentioned the party, he was all ears.

A. using both ears

B.  listening neglectfull

C. listening attentively 

D. partially deaf

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

A. supposedly

B. noticeably

C. recently

D. consistently

Câu 6: He had never experienced such discourtesy towards the president as it occurred at the annual meeting in May.

A. politeness

B. rudeness

C. measurement

D. encouragement