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第1题

Sound is conducted through steel in the same manner Aas in air Bas through air Cas air does Dlike air
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第2题

On hearing the news that her father died, shetears. A) burst out burst in B) Cburst into Dburst forth
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第3题

All science students,,should have a good foundation in basic sciences Awhether they are future physicists and chemists
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第4题

I’ll pick you at your college gate and take you straight to the station. Aon Boff Cout DUp
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