（）， we discovered that the goods were inferior in quality to the sample.       

单项选择题Asaresultofthe（）switches，wearenowfacedwiththefollowinglosses.

A.effective 
B.broke 
C.fault 
D.defective

单项选择题partofyourpaymenthasbeenreceived，but$20，000isstill（）

A.withstanding 
B.paid 
C.owned 
D.outstanding