There may be a threshold below which blood pressure reductions become_____given that a long-running study showed no decreased heart risk for drops in blood pressure below a certain point.
Aworthwhile
Bindiscernible
Carduous
Dsignificant
Esuperfluous
我错选了B,当时我的想法是形容词修饰的blood pressure reductions
可是网上的解答是空格所填的内容是修饰There may be a threshold below which blood pressure reductions这一句话。但是从语法角度来说不正确啊。求高手解答作者: viola_88 时间: 2015-3-8 10:01:52