33. According to the passage, what in the rock strata is a clue to geologists of a past ice age？
(A) Ice
(B) Melting glaciers
(C) U-shaped valleys
(D) Substances from other areas

29. The core of the moon is much smaller, in relation to its size, _______ of the planets. (A) those (B) than those (C) ones (D) than are those

30. Regarded as one of the greatest physicists, _______. (A) the relationship between force and motion was first expressed by Isaac Newton (B) the first to express the relationship between force and motion was Isaac Newton (C) Isaac Newton was the first to express the relationship between force and motion (D) it was Isaac Newton who was the first to express the relationship between force and motion

31. According to the passage, what happens during an ice age？ (A) Rock strata are recognized by geologists. (B) Evidence of foreign materials is not found. (C) Ice covers a large portion of the Earth’s surface. (D) Ice melts six times.

32. The passage covers how many different methods of recognizing past ice ages？ (A) One (B) Two (C) Three (D) Four

34. The paragraph preceding this passage most probably discusses _______. (A) a different scientific television series (B) Carl Sagan’s scientific achievements (C) the Pulitzer Prize won by Carl Sagan (D) public television

35. The paragraph following this passage most likely contains information on what？ (A) The popularity of science (B) The program (C) The astronomer Carl Sagan (D) Topics and issues from various fields of science

36. Which of the following would be the most appropriate title for the passage？ (A) How to Develop Information-Literacy Competence (B) Evaluate Information Effectively Based on Specific Criteria (C) The Invention of Electronic Communication Devices (D) The Importance of Information Literacy

37. All of the following are regarded as important EXCEPT _______. (A) the ability to process information (B) the capacity to innovate new technologies (C) the ability to evaluate information (D) the capacity to use various media for retrieving and presenting information

38. The word“critical＂in the passage is closest in meaning to _______. (A) useful (B) serious (C) important (D) incredible

39. According to the passage, why should people evaluate information and its sources critically？ (A) To retrieve and archive information efficiently (B) To ensure the accuracy of the information (C) To find the most updated information (D) To use a variety of formats to obtain information