33.Where in the passage does the author mentions the variety of fossils found at Holzmaden?
(A) Line 1
(B) Lines 3-5
(C) Lines 12-13
(D) Lines 19-21

29. Why does the author mention the specimen preserved in the birth canal (line 19)? (A) To illustrate that the embryo fossils are quite advanced in their development (B) To explain why the fossils are well preserved (C) To indicate how the ichthyosaurs died (D) To prove that ichthyosaurs are marine animals.

30. The word "they" in line 22 refers to (A) pregnant females and young (B) quarry operations (C) the value of the fossils (D) these factors

31.The phrase "account for" in line 25 is closest in meaning to (A) record (B) describe (C) equal (D) explain

32.Which of the following best expresses the relationship between the first and second paragraphs? (A) The first paragraph describes a place while the second paragraph describes a field of study. (B) The first paragraph defines the terms that are used in the second paragraph. (C) The second paragraph describes a specific instance of the general topic discussed in the first paragraph. (D) The second paragraph presents information that contrasts with the information given in the first paragraph.

34.With what topic is the passage primarily concerned? (A) The river systems of portions of North America. (B) Certain geological features to the North American continent. (C) An exploratory trip sponsored by the United States government. (D) The discovery of natural resources in the United States.

35.According to the passage, the primary purpose of finding a water route across the continent was to (A) gain easy access to the gold and other riches of the Northwest (B) become acquainted with the inhabitants of the West. (C) investigate the possibility of improved farmland in the West. (D) facilitate the movement of commerce across the continent

36.The river Meriwether Lewis was instructed to explore was the (A) Wood (B) Missouri (C) Columbia (D) Mississippi

37.According to the passage, the explorers spent their first winter in what would become (A) North Dakota (B) Missouri (C) Montana (D) Idaho

38.The author states that Lewis and Clark studied all of the following characteristics of the explored territories EXCEPT (A) mineral deposits (B) the weather (C) animal life (D) native vegetation

39.The phrase "Picking up" in line 16 could best be replaced by which of the following? (A) Searching for (B) Following (C) Learning about (D) Lifting