3. The word “they” in line 4 refers to
(A) trees
(B) climbing mammals of moderately large size
(C) smaller species
(D) high tropical canopies

49. According to the passage, early-twentiethcentury education reformers believed that (A) different groups needed different kinds of education (B) special programs should be set up in frontier communities to modernize them (C) corporations and other organizations damaged educational progress (D) more women should be involved in education and industry

50. The word "it" in line 24 refers to (A) consumption (B) production (C) homemaking (D) education

1. The passage answers which of the following questions? (A) How is the rain forest different from other habitats? (B) How does an animal’s body size influence an animal’s need for food? (C) Why does the rain forest provide an unusual variety of food for animals? (D) Why do large animals tend to dominate the upper canopy of the rain forest?

2.Which of the following animals is less common in the upper canopy than in other environments? (A) Monkeys (B) Cats (C) Porcupines (D) Mice

4. According to paragraph 2, which of the following is true about the small mammals in the rain forest? (A) They have body shapes that are adapted to life in the canopy. (B) They prefer the temperature and climate of the canopy to that of other environments. (C) They have difficulty with the changing conditions in the canopy. (D) They use the trees of the canopy for shelter from heat and cold.

5. In discussing animal size in paragraph 3, the author indicates that (A) small animals require proportionately more food than larger animals do (B) a large animal’s size is an advantage in obtaining food in the canopy (C) small animals are often attacked by large animals in the rain forest (D) small animals and large animals are equally adept at obtaining food in the canopy

6. The word “typify” in line 19 is closest in meaning to (A) resemble (B) protect (C) characterize (D) divide

7. According to paragraph 4, what makes jumping from one tree crown to another difficult for small mammals? (A) Air friction against the body surface (B) The thickness of the branches (C) The dense leaves of the tree crown (D) The inability to use the front feet as hands

8. The word ‘supplement” in line 24 is closest in meaning to (A) control (B) replace (C) look for (D) add to

9. Which of the following terms is defined in the passage? (A) canopy(line 1) (B) warm blooded(line 5) (C) terminal leaves(line13) (D) springboard(line 21)