VI. Read the passage below and decide which answer A, B, C or D fits each numbered gap.

Come “fly" over the Rainforest - We'll take your breath away!

Located in Cairns, Australia, Rainforest Flyway is a world leader in ecotourism. We take our guests on a breathtaking “flight over rainforest trees and straight into the heart of the rainforest for an unforgettable experience.

On the Flyway, you'll experience over 7.5 kilometres of living rainforests while learning about this spectacular place. Did you know that Australia's rainforests are home to over 3,000 different plant species? And (21) ___________ of the trees here are more than 3,000 years old! After this visit you'll understand why it's so important to preserve the rainforests. And you'll see that environmentally responsible travel can be fun, educational, and breathtaking.

Even if you're a world traveller, you've never experienced anything like the Rainforest Flyway. You'll start your unique journey above the (22) ____________, as you “fly” in a comfortable gondola only a few meters above the trees. Sit back and enjoy the extraordinary scenery. You will be amazed at the breathtakingly rich and lush foliage. And rest assured, there was no damage done to the rainforest (23) ___________ during the construction of your gondola. That's why the development of the Flyway took over 40 months to complete.

Your gondola will bring you down into the rainforest itself, where you follow a path to see, hear, and smell the rainforest environment from the ground. Free tours are available several times a day. Tour guides can point out some unusual plants, provide you with interesting facts about rainforest ecology, and answer your questions.

Your Rainforest Flyway experience lasts 90 minutes and ends in the small town of Kuranda, just 25 kilometers northwest of Cairns. Here, you can continue your eco-tour with a visit to the protected areas that 2,000 tropical butterflies call home. You can also buy (24) ____ artsand crafts made by the people of Kuranda. And if that isn't enough, you can continue on to the wildlife reserve located a short 9 kilometers west of Kuranda to see animals from all parts of the world.

Rainforest Flyway has won numerous awards, including Travel Planet magazine's "Best Ecotourism Destination”. Call or visit us online to make your (25) ____________.

The word "they” in the passage refers to______. A. windows B. curtains C. electrical appliances D. ordinary bulbs