According to some economists, the July decrease in unemployment so that it was the lowest in two years suggests that the gradual improvement in the job market is continuing.
so that it was the lowest in two years
so that it was the lowest two-year rate
to what would be the lowest in two years
to a two-year low level
to the lowest level in two years
C would错,已经是既定的事实
D 是一个持续性的水平 长期的
E 是个时间点 短暂的低水平
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