— What impresses you most about your hometown? 

—  The street, the width of which is three times ______ it was ten years ago. [ ]

A. that              

B. as              

C. than              

D. what

______是指放松对金融市场和金融体系的过度干预，使利率和汇率能够充分反映资金和外汇的实际供求情况，并能够抑制通货膨胀。