A.have
B.has
C.has been
D.have been
A.has ruined
B.had ruined
C.has been ruined
D.had been ruined
开始考试点击查看答案A.was asked
B.will ask
C.have asked
D.have been asked
开始考试点击查看答案A.are not prepared
B.don't prepare
C.haven't prepared
D.are not preparing
开始考试点击查看答案A.flowing to
B.flew to
C.being flown to
D.been flowing to
开始考试点击查看答案A.has been selling
B.has been sold
C.is selling
D.is being sold
开始考试点击查看答案A.are being graded
B.are grading
C.have graded
D.have been graded
开始考试点击查看答案A.poison
B.poisoned
C.poisonous
D.poisoning
开始考试点击查看答案A.has introduced
B.was introduced
C.is introduced
D.is being introduced
开始考试点击查看答案A.was put down
B.have been let down
C.have been put down
D.am let down
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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