A.takes off
B.is taking off
C.has taken off
D.took off
A.have traveled; has come
B.was traveling; had been come
C.am traveling; has come
D.have traveled; has been come
开始考试点击查看答案A.A.has ; bought
B./; bought
C.did ; buy
D.had ; bought
开始考试点击查看答案A.didn't see
B.wouldn't see
C.hasn't seen
D.hadn't seen
开始考试点击查看答案A.didn't have
B.don't have
C.won't have
D.haven't had
开始考试点击查看答案A.had said
B.said
C.were saying
D.had been saying
开始考试点击查看答案A.is used; not to pollute
B.has used; is not polluted
C.is being used; do not pollute
D.has been used; to pollute
开始考试点击查看答案A.are; expect
B.were; had expected
C.have been; were expecting
D.are; were expecting
开始考试点击查看答案A.worked
B.had worked
C.are working
D.had been working
开始考试点击查看答案A.has used it; it is told
B.will used it; it was told
C.uses it; it has told
D.has used it; it told
开始考试点击查看答案A.has left
B.is to leave
C.will have left
D.leaves
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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