21. (A) Its power bill reaches $9 million a year. (B) It sells thousands of light bulbs a day. (C) It supplies power to a nearby town. (D) It generates 70% of the electricity it uses.

26. Questions 26 to 29 are based on the passage you have just heard. (A) They are motorcycles designated for water sports. (B) They are speedy boats restricted in narrow waterways. (C) They are becoming an efficient form of water transportation. (D) They are getting more popular as a means or water recreation.