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單項選擇題

Lines drawn through points on the earth having the same atmospheric pressure are known as（）.

A.isothermal
B.millibars
C.isobars
D.seismics

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單項選擇題

My ship（）heavy weather during this voyage.

A.used
B.saw
C.met
D.encountered

單項選擇題

My ship sailed（）port of Shanghai, bound（）Rotterdam.

A.from, for
B.for, on
C.on, at
D.at, from

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