The view of science fiction encouraged by pulp magazines, whilewrong, is nevertheless ______.
A) popular C) fashionable
B) elegant D) deranged

A．greater than that of railway with respect to fixed cost
B．the middle with respect to fixed cost
C．quicker than that of rail and highway
D．to transport small tonnage at low variable cost

A．Steamboats are the original sailing vessels.
B．Steam power was followed by diesel power.
C．Deep-water and navigable inland water transports are equivalents.
D．There is not domestic commerce in the Atlantic Ocean.