单选题
During the early period of ocean navigation,（ ）any need for sophisticatedinstruments and techniques.
Aso that hardly
Bwhen there hardly was
Chardly was
Dthere was hardly
正确答案
答案解析
该题考查句子结构。可以看出during the early...navigation在句中做状语，如果选择B选项该句没有主句，所以本题是一简单句，选项A、C不符合倒装结构，故答案为D。