Câu hỏi:

She is always diplomatic when she deals with angry students.

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

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

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

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

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

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