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:

It was very difficult to understand what he was saying about the noise of the traffic.

A. pick up

B. make up

C. turn out

D. make out

Câu 2:

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 3:

Students are expected to always adhere to school regulations.

A. question

B. violate

C. disregard

D. comply

Câu 4:

The most important thing is to keep yourself occupied.

A. relaxed

B. comfortable

C. possessive

D. busy

Câu 5:

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

A. unplanned

B. deliberate

C. accidental

D. unintentional

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