A.is ;it is
B.is ;they are both
C.are ;they are both
D.are ;it is
A.have been tried
B.has been tried
C.have tried
D.has tried
开始考试点击查看答案A.were; was
B.were; were
C.was; was
D.was; were
开始考试点击查看答案A.is
B.are
C.has
D.have
开始考试点击查看答案A.two-thirds; are
B.two-third; are
C.second-three; is
D.second-threes; is
开始考试点击查看答案A.A large number of…have
B.A great deal of…has
C.Many a…has
D.Plenty of…have
开始考试点击查看答案A.was; was
B.were; were
C.is; is
D.are; are
开始考试点击查看答案A.has
B.have
C.had
D.had had
开始考试点击查看答案A.are
B.is
C.were
D.have been
开始考试点击查看答案A.were
B.have
C.are
D.is
开始考试点击查看答案A.was
B.is
C.has been
D.had been
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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