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Li Ming is so careful that he always looks over his exercises to ______ there are no mistakes.
11个月前
你是怎样理解《童稚记趣》中的“趣”字的含义的?你从中得到了怎样的启示?
1年前
奥运祥云火炬的燃烧系统由燃气罐(内有液态丙烷)、稳压装置和燃烧器三部分组成,当稳压阀打开以后,燃气以气态形式从气罐里出来,经过稳压阀后进入燃烧室进行燃烧.则以下说法中正确的是_________.
1年前
A: Look! Who is that boy? B: He is my 1 brother. I am older than he is.
1年前
1年前