A-A+
Beijing has cut its birth-rate ______ almost 6
问题详情
Beijing has cut its birth-rate ______ almost 60 percent in the past 20 years.
A．to
B．by
C．for
D．with请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：“…+by+数字或倍数+…”当本句型中有比较级出现或有表示增减意义的动词或分词出现时，by后表示的是净增减的数或净增加的倍数。
