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医生和药师根据临床医疗需要，结合本院用药经验，整理选定一批处方，经药事管理委员会审查和院领导批准作为本院常规处方（ ）
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【单选题】---I’ll ask the teacher about past tense. I’m very puzzled about it. --- That is just _____ most of our classmates have doubt.
A.
what
B.
why
C.
where
D.
how
【简答题】The night of graduation, I was afraid. Two hundred people were sitting out there. I felt tense and I wanted to run away, 36 I couldn’t! After all, my own children were sitting in front of me with many...
【单选题】What tense is this? "I am here."
A.
present perfect
B.
present simple
C.
past perfect
D.
past progressive
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