Scanning Exercise B PDF

Name : Class : St. Number : Question 18 – 27 18. What does the passage mainly discuss? (A) The economic impact of air pollution (B) What constitutes an air pollutant (C) How much harm air pollutants can cause (D) The effects of compounds added to the atmos...

Name : Class : St. Number : Question 18 – 27 18. What does the passage mainly discuss? (A) The economic impact of air pollution (B) What constitutes an air pollutant (C) How much harm air pollutants can cause (D) The effects of compounds added to the atmosphere 19. The word "adversely" in line 3 is closest in meaning to (A) negatively (B) quickly (C) admittedly (D) considerably 20. It can be inferred from the first paragraph that (A) water vapor is an air pollutant in localized areas (B) most air pollutants today can be seen or smelled (C) the definition of air pollution will continue to change (D) a substance becomes an air pollutant only in cities 21. The word "altered" in line 12 is closest in meaning to (A) eliminated (B) caused (C) slowed (D) changed 22. Natural pollutants can play an important role in controlling air pollution for which of the following reasons? (A) They function as part of a purification process. (B) They occur in greater quantities than other pollutants. (C) They are less harmful to living beings than are other pollutants. (D) They have existed since the Earth developed. 23. According to the passage, which of the following is true about human-generated air pollution in localized regions? (A) It can be dwarfed by nature's output of pollutants in the localized region. (B) It can overwhelm the natural system that removes pollutants. (C) It will damage areas outside of the localized regions. (D) It will react harmfully with naturally occurring pollutants. 24. The word "noxious' in line 19 is closest in meaning to (A) harmful (B) noticeable (C) extensive (D) weak 25. According to the passage, the numerical valued of the concentration level of a substance is only useful if (A) the other substances in the area are known (B) it is in a localized area (C) the naturally occurring level is also known (D) it can be calculated quickly 26. The word "detectable" in line 24 is closest in meaning to (A) beneficial (B) special (C) measurable (D) separable 27. Which of the following is best supported by the passage? (A) To effectively control pollution local government should regularly review their air pollution laws. (B) One of the most important steps in preserving natural lands is to better enforce air pollution laws. (C) Scientists should be consulted in order to establish uniform limits for all air pollutants. (D) Human activities have been effective in reducing air pollution. Question 28 – 35 28. The passage supports which of the following conclusions? (A) Some species of ichthyosaurs decayed more rapidly than other species. (B) Ichthyosaur newborns are smaller than other new born marine reptiles. (C) Ichthyosaurs were more advanced than terrestrial creatures. (D) Ichthyosaurs may have gathered at Holzmaden lo give birth. 29. Which of the following is true of the fossil deposits discussed in the passage ? (A) They include examples of newly discovered species. (B) They contain large numbers of well-preserved specimens. (C) They are older than fossils found in other places. (D) They have been analyzed more carefully than other fossils. 30. Why does the author mention the specimens preserved in the birth canal (line 21-22)? (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 31. 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 32. The phrase "account for" in line 25 is closest in meaning to (A) record (B) describe (C) equal (D) explain 33. Which of the following best expresses the relationship between the first and second paragraphs? (A) The first paragraph describes a place which 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. Where in the passage does the author mention the variety of fossils found at Holzmaden? (A) Line 1 (B) Lines 3-5 (C) Lines 12-13 (D) Lines 19-21 35. All of the following are mentioned as factors that encourage fossilization EXCEPT the (A) speed of burring (B) conditions of the water (C) rate at which soft tissues decay (D) cause of death of the animal