... burned.ɕThey were not available to all.ɕThey contained sulfuric acid. 41 TOEFL iBT Reading TOEFL iBT Reading ExplanationIn the first sentence from the excerpt the author says that “new discoveries ... important part of the passage. On the TOEFL iBT, some words in the passage that are unusual, technical, or have special meanings in the context of the topic are defined for you. If you click on the ... material, the artist must take into account the physi-cal properties of the material. In the passage, the author uses the example of the bronze statues of horses to discuss how artists had to include...