问题
选择题
A British official said that_____ this impractical policy could be changed , the future for Britain was indeed dark.
A．unless
B．when
C．if
D．until
答案
答案：A
题目分析：考查连词：A．unless 除非，B. when当…时候， C.if如果，D.until直到，句意：一个英国官员说：英国的未来会很黑暗除非这个不实用的政策被改变。选A。