Câu hỏi: The 1908 Siberian meteorite explosion brought about considerable depletion of the northern hemisphere's ozone layer.

A. was caused by

B. resulted in

C. brought back

D. was initiated by

Câu 1: The famous racehorse Secretariat had to be destroyed because of a painful, incurable hoof disease.

A. disabling

B. vexatious

C. dangerous

D. irreparable

Câu 2: In Benjamin Franklin's almanac, he warns against making hasty decisions.

A. expensive

B. unhealthy

C. firm

D. quick

Câu 3: He was fired because of his misconduct at the office party.

A. mistake

B. impropriety

C. condition

D. singing

Câu 4: The aircraft carrier is indispensable in naval operations against sea or shore based enemies.

A. unique

B. novel

C. exotic

D. vital

Câu 5: Now I understand why you moved out of that house.

A. I am surprised

B. it frustrates me

C. I am intrigued

D. it makes sense to me

Câu 6: Victoria Holtand William Shakespeare are prolific writers.

A. productive

B. famous

C. esteemed

D. celebrated