A.hasn't cleaned
B.didn't clean
C.wasn't cleaned
D.hasn't been cleaned
A.are painting
B.are being painted
C.are painted
D.have painted
开始考试点击查看答案A.is being repaired
B.is repaired
C.has repaired
D.will be repaired
开始考试点击查看答案A.A.are being built
B.were being built
C.was being built
D.is being built
开始考试点击查看答案A.is broadcast
B.is being broadcast
C.has been broadcast
D.had been broadcast
开始考试点击查看答案A.has graded
B.is graded
C.is being graded
D.is grading
开始考试点击查看答案A.has been cheated
B.have been cheated
C.were cheated
D.was cheated
开始考试点击查看答案A.Did; develop
B.Were; developed
C.Have; developed
D.Have; been developed
开始考试点击查看答案A.taught
B.have taught
C.are taught
D.have been taught
开始考试点击查看答案A.have produced
B.have been produced
C.are producing
D.are being produced
开始考试点击查看答案A.are built
B.built
C.have built
D.have been built
开始考试点击查看答案高中数学代数与函数一数系的扩充与复数的引入36
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入28
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入29
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入30
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入31
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入32
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入33
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入34
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入35
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入26
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