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题库 / OG2017V-SC-226
Around 1900, fishermen in the Chesapeake Bay area landed more than seventeen million pounds of shad in a single year, but by 1920, overfishing and the proliferation of milldams and culverts that have blocked shad migrations up their spawning streams had reduced landings to less than four million pounds.
that have blocked shad migrations up their spawning streams had reduced landings to less
that blocked shad from migrating up their spawning streams had reduced landings to less
that blocked shad from migrating up their spawning streams reduced landings to a lower amount
having blocked shad from migrating up their spawning streams reduced landings to less
having blocked shad migrations up their spawning streams had reduced landings to an amount lower
续
B. Correct. The comparison of poundage is efficiently explained, and the sequence of
tenses makes sense. Despite a possible superficial appearance of a comparison
between countable things (pounds), less is more appropriate than fewer for the
comparison. The fishermen landed different amounts of fish; they did not land the
numbers of pounds in terms of which those amounts are measured.
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