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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
OG2017官方解释
Diction; Verb form
The point of this sentence is to explain how overfishing and interference with shad
spawning streams affected the size of shad landings. The sentence makes this point by
comparing the sizes of annual landings before and after 1920. The sentence most
efficiently compares the poundage of pre- and post-1920 landings with the comparative
form [from] more than . . . to less than. . . .
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