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またSCでわからない問題があります。
どなたか教えてください。
ちなみにPRのWhite Book Set7の21です。
Although some officials noted that using machines for farming in China costs more than traditional hand cultivation, the <<mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half.>>
(A) mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half
(B) mechanization of farming in the village of Long Bow doubled the corn yield while cutting costs to half those of the previous year
(C) mechanization of farming in the village of Long Bow doubled the corn yield as costs were cut to half of the previous year’s
(D) farming mechanization in the village of Long Bow doubled the corn yield as it cut in half the previous year’s costs
(E) farming mechanization in the village of Long Bow doubled the corn yield while costs were cut to half that of the previous year
C,Dは、収穫量が倍になった一方でコストが前年の半分になった、という文脈により、asよりもwhileの方が適切なので×
Eはthat of the previous yearがthoseになるべき×
以上によりA,Bにまで絞り込めるのですが、Aの切り方がわかりません。なお、正解はBです。
よろしくお願いします。
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