托业考试

【单选题】 ______ you have written authorization from the Security Department, please do not enter the zone delineated by the green line.
A．Because
B．Unless
C．Despite
D．Whereas

网考网参考答案：B
网考网解析：
you have written authorization from the Security Department是状语从甸，故横线处应填入从属连词。排除(C)despite。由主句内容可知，“除非您有安全部门的书面许可”的句意最恰当。答案是(B)unless(除非)。 查看试题解析出处>>