24. According to the passage, the positions and colors of the figures m high-tech animation are determined by
(A) drawing several versions
(B) enlarging one frame at a lime
(C) analyzing the sequence from different angles
(D) using computer calculations

20.According to the passage, in computer-assisted animation the role of the computer is to draw the (A) first frame (B) middle frames (C) last frame (D) entire sequence of frames

21. The word "they" in line 9 refers to (A) formulas (B) databases (C) numbers (D) objects

22. According to the passage, the frame buffers mentioned in line 15 are used to (A) add color to the images (B) expose several frames at the same time (C) store individual images (D) create new frames

23. The phrase "nothing more than" in lines 15-16 is closest in meaning to (A) increasingly (B) simply (C) paiticularly (D) instantly

25. The word "captures" in line 21 is closest in meaning to (A) separates (B) registers (C) describes (D) numbers

26. The word "Once" in line 22 is closest in meaning to (A) before (B) since (C) after (D) while

27. According to the passage, how do computer-animation companies often test motion? (A) They experiment with computer-generated line drawings. (B) They hand-draw successive frames. (C) They calculate high-resolution images. (D) They develop extensive mathematical formulas.

28. The word "task" in line 28 is closest in meaning to (A) possibility (B) position (C) time (D) job

29. Which of the following statements is supported by the passage? (A) Computers have reduced the costs of animation. (B) In the future, traditional artists will no longer be needed. (C) Artists are unable to produce drawings as high in quality as computer drawings. (D)Animation involves a wide range of technical and artistic skills.

30. Which one of the following questions does the passage answer? (A) What role did Native American men play in teaching their agricultural methods to Scandinavian settlers? (B) How did the interaction between Native Americans and Scandinavian settlers benefit both groups? (C) What hardships did the Scandinavian women settlers experience in North America? (D) What caused a rivalry between the English and Scandinavian settlers in North America?