Câu hỏi:

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 1:

The notice should be put in the most conspicuous place so that all the students can be well-informed.

A. easily seen

B. beautiful

C. popular

D. suspicious

Câu 2:

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

A. showy

B. expensive

C. large

D. ossified

Câu 3:

The US troops are using much more sophisticated weapons in the Far East.

A. expensive

B. B: simple and easy to use

C. C: complicated

D. difficult to operate

Câu 4:

Ralph Nader was the most prominent leader of the U. S consumer protection movement.

A. casual

B. significant

C. promiscuous

D. D. aggressive

Câu 5:

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 6:

Carpets from countries such as Persia and Afghanistan often fetch high prices in the United States.

A. Artifacts

B. Pottery

C. Rugs

D. Textiles