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Which one would you prefer, tea ________ coffee?
1年前
The doctor came up and asked me ______the day before.
1年前
If you are weak ____ a subject, ______your teacher for advice can help.
1年前
青少年要注意正确用眼,预防近视,近视眼看远处的物体相当吃力,它将物体的像成在视网膜的______.这种眼睛需要佩戴一个合适的______透镜来矫正,该镜片对光线有______作用.
1年前
张师傅加工了100个零件,合格的有99个合格的零件个数与加工的零件的几分之几?
1年前