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Li Ming is so careful that he always looks over his exercises to ______ there are no mistakes.
10个月前
1年前
The family _____ on time, but their car had a flat tyre on the halfway.
1年前
如图,已知点B,E,C,F在一条直线上,AB=DF,AC=DE,∠A=∠D. (1)求证:AC∥DE; (2)若BF=13,EC=5,求BC的长.
1年前
58000平方米=________公顷 5.2平方千米= ________公顷
1年前