medium · SAT Reading & Writing
Physicists have successfully used 'superconductors'—materials that can conduct electricity without resistance—to create powerful magnets for medical imaging. While these materials currently only function at extremely low temperatures, researchers are racing to develop 'room-temperature' superconductors that would revolutionize the energy grid. Such a breakthrough would allow for the long-distance transmission of electricity with zero loss of power.
Which choice best describes the function of the underlined sentence as a whole?
- It describes a current technical limitation and identifies a potential future breakthrough.
- It confirms that room-temperature superconductors were already implemented in the energy grid in 2022.
- It proves that electricity cannot be transmitted over distances greater than ten miles.
- It argues that modern medical imaging is too expensive because it relies on magnetism.
Sign up free to see the explanation and track your rank →
More SAT Reading & Writing practice
- The use of bioluminescence in marine organisms, such as the deep-sea anglerfish, serves…
- In her 1977 book 'On Photography', Susan Sontag argues that the act of taking a picture…
- The painter Mary Cassatt is often celebrated for her depictions of the private lives of…
- Which choice completes the text with the most logical and precise word or phrase?
- The study of deep-sea hydrothermal vents has revealed a unique ecosystem that does not…
- Which choice completes the text with the most logical and precise word or phrase?
- The following text is from a literary analysis of the poet Emily Dickinson. Dickinson's…
- Which choice completes the text with the most logical and precise word or phrase?
All Reading & Writing questions · SAT study guide · SAT glossary · SAT flashcards