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Adopting this method, the team raised the average yield______40%.A、atB、byC、to
Adopting this method, the team raised the average yield______40%.A、atB、byC、to
游客
2025-05-04
33
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问题
Adopting this method, the team raised the average yield______40%.
选项
A、at
B、by
C、to
D、with
答案
B
解析
raise the yield by 40%意为“将产量提高了40%”,这是增加或减少多少的倍数表达法。如果要表达的是纯增加或减少的具体数,也用介词by表示(有时by可以省略),如:raise the price by 10%;The price of tea has risen by five pence.Party membership has increased by 4,000.Butter rose five cents in prices.如果纯增加或减少的量刚好是整数倍时就不需用介词by,如:Foreign investments increased six times.如果要表示“增加到(或减少到)……”时需用介词to;如要表示“(从……)增加到(或减少到)……”时,要用(from…)to,如:The price of tea has risen(from 20 pence)to 30 pence.
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