Câu hỏi:

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

A. accidents

B. misunderstandings

C. incidentals

D. misfortunes

Câu 1:

His new yacht is certainly an ostentatious display of his wealth.

A. showy

B. expensive

C. large

D. ossified

Câu 2:

She is always diplomatic when she deals with angry students.

A. strict

B. outspoken

C. firm

D. tactful

Câu 3:

Around 150 B. C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

A. record

B. shine

C. categorize

D. diversify

Câu 4:

His career in the illicit drug trade ended with the police raid this morning.

A. elicited

B. irregular

C. secret

D. illegal

Câu 5:

The shop assistant was totally bewildered by the customer’s behavior.

A. disgusted

B. puzzled

C. angry

D. upset

Câu 6:

The most important thing is to keep yourself occupied.

A. relaxed

B. comfortable

C. possessive

D. busy