The rainforest is home (31) ____ more than half of the world's animals. Colourful and unusual animals dwell in all four layers of the forest. All types of creatures are (32) ____ , from tiny insects to large mammals. Millions of insects, reptiles, amphibians, birds, and mammals live here. Insects are the most (33) ____ animals in rainforests.
In temperate rainforests, most of animals are ground (34) ____. Different animals live in different strata (layers) of the rainforest. Birds live in the canopy ((35) ____ leaves of the trees) and in the emergents (the tops of the tallest trees). Large animals like jaguars (36) ____ live on the forest floor, but others like howler monkeys and sloths live in the understory (37) ____. Insects are found everywhere.
Many species of rainforest animals are endangered, many (38) ____ have become extinct as the number of rainforests on Earth decreases. The main (39) ____ of animal extinction in recent times has been human demand, (40) ____ for animal resources directly, or for the natural resources constituting the animals' habitats.
31. A. of B. to C. on D. at
32. A. expressed B. represented C. displayed D. performed
33. A. numerable B. numerous C. numerical D. numeracy
34. A. dwellers B. natives C. residents D. citizens
35. A. taller B. further C. higher D. upper
36. A. widely B. generally C. popularly D. fully
37. A. layer B. area C. platform D. group
38. A. other B. the other C. others D. the others
39. A. reason B. motive C. cause D. base
40. A. neither B. both C. many D. either
