阅读下列短文，选择正确答案。 The U. S.'s flag is red, white and blue. It's the same colour as the U. K.'s and Australia's flag. It has fifty white stars, seven red stripes and six white stripes. People speak English in the U. S. The capital city of the U. S. is Washington, D. C. 1. People speak in the U. S. [     ] A. Chinese B. English C. French 2. How many white stars on the U. S.'s flag? [     ] A. Five. B. Fifteen. C. Fifty. 3. What colour are the stripes? [     ] A. White. B. Red. C. Red and white.