新标准大学英语视听说4unittest答案

1DBACA BCDAD B

B4U2 CACBB,DAADA,B 82% B4U3 AAACB,BCDDA,C 82% B4U4 CDDAB,CABCB,A 82% B4U5 CBACD,DAACB,C 91%

B4U6 ADADC,CACBC,A 82% B4U7 BBACD,ADCBC,A 82% B4U8 ACBBA,CACDB,A 73% B4U9 DABDB,CDBCC,C 82% B4U10 CBBBD,ABCBC,D 100%.