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A.Them are no rapids or waterfalls.B.There is a constant, strong wind.C.

A. Them are no rapids or waterfalls.
B. There is a constant, strong wind.
C. Navigation is rather difficult.
D. Frequent storms cause problems for riverboats.

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A.encouragementB.amusementC.disappointmentD.surprise

A. encouragement
B. amusement
C. disappointment
D. surprise

A.The use of oversized freight containers.B.Safety problems with railroad tracks.

A. The use of oversized freight containers.
B. Safety problems with railroad tracks.
C. The growth of the automotive industry.
D. The high cost of meeting environmental regulations.

A.typeB.sortC.seekD.take

A. type
B. sort
C. seek
D. take

A.The man should buy a new car.B.The car looks better than it used to.C.

A. The man should buy a new car.
B. The car looks better than it used to.
C. The man should fly to Florida.
D. The man should get his car checked.

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