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题库 / Prep2007E1-SC-24
Employment costs rose 2.8 percent in the 12 months that ended in September, slightly less than they did in the year that ended in the previous quarter.
less than they did
less than it did
less than they were
lower than
lower than they were
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less表示smaller in size, amount, degree....
lower是higher的对立面
costs rose 2.8 percent in X, less than costs rose in Y.
这里后面的costs rose和前面完全一致，所以可以改写成
costs rose 2.8 percent in X, less than they did in Y.
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