问题
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Friction developing between the moving parts of a governor, governor linkage and control v
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What are the speakers mainly discussing?A.An experiment in Antarctica.B.Part of the Larsen
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Which of the following italicized parts indicates a result?A.Her husband died, leaving her
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Which of the following is NOT in the eastern part of the USA?A.Massachusetts.B.Maine.C.Nor
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What is the main idea of the news item?A.Dinosaurs died out 65 million years ago.B.Cause o
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Night of the Living Ants When an ant dies other ants move the dead insect out of the nest.