What the teacher whispered softly to the little girl________．
A. surprised the little girl very much
B. changed the little girl’s life forever
C. had been put into her mouth by God
D. was the same as to the other children
查看答案
The best way both for reading and for writing is to________．
A. sit facing the light
B. 1et the light shine from your back
C. sit with your right side towards the light
D. have the light come from your left
A.wentB.cameC.reachedD.got
A. went
B. came
C. reached
D. got
A.keepB.makeC.getD.have
A. keep
B. make
C. get
D. have
共轭效应
A. 东莨菪碱＜莨菪碱
B. 顺-10-羟基二氢去氧可待因＞反-10-羟基二氢去氧可待因
C. 小檗碱＞吗啡
D. 秋水仙碱＜吗啡
E. 麻黄碱＞去甲麻黄碱 说明由下列原因造成碱性不同的生物碱
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