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 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 2:

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 3:

I clearly remember talking to him in a chance meeting last summer.

A. unplanned

B. deliberate

C. accidental

D. unintentional

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:

Sometimes when I hear the news, I feel very miserable.

A. confused

B. frightened

C. upset

D. disappointed

Câu 6:

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

A. casual

B. significant

C. promiscuous

D. D. aggressive