| 1. |
dome |
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Answer: Option A Explanation: A dome is a large rounded roof or ceiling, so being rounded is essential to a dome. A geodesic dome (choice b) is only one type of dome. Some, but not all domes, have copper roofs (choice d). Domes are often found on government buildings (choice c), but domes exist in many other places. |
A good way to approach this type of question is to use the following sentence: "A ______ could not exist without ______.". Find the word that names a necessary part of the underlined word.
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