23. What is the passage mainly about?
(A) Finding meteorites on Earth's surface
(B) How the composition of meteorites is similar to that of Earth
(C) Why most meteorites do not survive impact with Earth
(D) The origins of meteorites

19. According to paragraph 3, the architectural significance of the Halle des Machines was its (A)wide span (B)great height (C)unequaled beauty (D)prefabricated units of glass

20. How did the artistic elite mentioned in the passage react to the buildings at the Paris Exhibition? (A) They tried to copy them. (B) They ridiculed them. (C) They praised them. (D) They refused to pay to see them.

21. It can be inferred that the delayed use of exposed iron structures in traditional styles of architecture is best explained by the (A) impracticality of using iron for small, noncommercial buildings (B) association of iron architecture with the problems of the Industrial Revolution (C) general belief that iron offered less resistance to fire and harsh weather than traditional materials (D) general perception that iron structures were not aesthetically pleasing

22. The paragraph following the passage most probably discusses (A) the gradual inclusion of exposed iron in traditional styles of architecture (B) further improvements in iron processing methods (C) the return to traditional building materials for use in commercial structures (D) the decreased use of stone and timber as a building material

24. The word "core" in line 4 is closest in meaning to (A) center (B) surface (C) mineral (D) field

25.The author mentions "dark stones" and "white snow" in line 9 to illustrate that. (A) meteorites are found most often in Antarctica (B) glaciers stop meteorites from mixing with soil (C) meteorites are easier to find in glacial areas (D) most of Antarctica is covered with meteorites

26. The word "embedded" in line 10 is closest in meaning to (A) isolated (B) encased (C)enhanced (D) enlarged

27.The word "spotting" in line 17 is closest in meaning to (A) removing (B) identifying (C)cooling (D) falling

28.The passage suggests that which of the following is most commonly responsible for the poor preservation of meteorites that fall to Earth? (A) The size of the fragments (B) Ice sheets (C) Erosion (D) Desert heat

29.Where was the Mundrabilla meteorite discovered? (A)On the Nullarbor Plain (B)In a field (C)On a mountain (D)In Antarctica