单项选择题

（） 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

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单项选择题
The company has received many complaints from customers who believe that our rates are far from （）.

A.allowable
B.satisfied
C.trustworthy
D.reasonable
单项选择题
Contract details are not to be made （） because of national security requirements.

A.public
B.publicly
C.publicity
D.publicize
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