Câu hỏi: Though many scientific breakthroughs have resulted from mishaps, it has taken brilliant thinkers to recognize their potential.

A. misunderstandings

B. accidents

C. misfortunes

D. incidentals

Câu 1: Primary education in the United States is compulsory

A. free of charge

B. required

C. excellent

D. easy

Câu 2: John was not promoted because his work did not meet the manager's expectations.

A. anticipations

B. expenditures

C. expertise

D. gaudiness

Câu 3: Many doctors are still general practitioners, but the tendency is toward specialization in medicine.

A. rumor

B. trend

C. prejudice

D. security

Câu 4: Proximity to the court house makes an office building more valuable.

A. Interest in

B. Similarity to

C. Nearness to

D. Usefulness for

Câu 5: The blank space of the paper must be 1.5 inches at the top and 1 inch at the bottom and on the sides.

A. frames

B. borders

C. shutters

D. margins

Câu 6: The fer-de-lance, a kind of viper, is one of the most poisonous snakes.

A. deadly

B. vicious

C. bad tasting

D. unhealthy