A.are introduced
B.have been introduced
C.were introduced
D.had been introduced
A.prefer
B.preferred
C.have preferred
D.am preferring
开始考试点击查看答案A.played; has not played
B.plays; had not played
C.plays; did not play
D.plays; has not played
开始考试点击查看答案A.have
B.are having
C.will have
D.had
开始考试点击查看答案A.occupied
B.absorbed
C.devoted
D.concentrated
开始考试点击查看答案A.kept talking
B.kept to talk
C.has kept talking
D.kept to talking
开始考试点击查看答案A.It is
B.It was
C.It has been
D.It had been
开始考试点击查看答案A.had thought
B.was thinking
C.thought
D.think
开始考试点击查看答案A.is happened
B.was happened
C.happened
D.has been happened
开始考试点击查看答案A.comes
B.came
C.has come
D.had come
开始考试点击查看答案A.are mending
B.have mended
C.are being mended
D.have been mended
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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