A.are built
B.built
C.have built
D.have been built
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.taught
B.have taught
C.are taught
D.have been taught
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.has been cheated
B.have been cheated
C.were cheated
D.was cheated
开始考试点击查看答案A.hasn't cleaned
B.didn't clean
C.wasn't cleaned
D.hasn't been cleaned
开始考试点击查看答案A.has printed
B.has been printing
C.is printed
D.is being printed
开始考试点击查看答案A.is being announced
B.has announced
C.was announcing
D.had been announced
开始考试点击查看答案A.promised
B.were promised
C.have promised
D.have been promised
开始考试点击查看答案A.told
B.have told
C.have been told
D.are being told
开始考试点击查看答案A.has introduced
B.is being introduced
C.is introduced
D.was introduced
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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