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 most important thing is to keep yourself occupied.

A. relaxed

B. comfortable

C. possessive

D. busy

Câu 2:

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

A. casual

B. significant

C. promiscuous

D. D. aggressive

Câu 3:

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

A. Artifacts

B. Pottery

C. Rugs

D. Textiles

Câu 4:

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

A. disgusted

B. puzzled

C. angry

D. upset

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:

Students are expected to always adhere to school regulations.

A. question

B. violate

C. disregard

D. comply