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【单选题】
下列变形中：①由方程 =2去分母，得x﹣12=10；②由方程 x= 两边同除以 ，得x=1；③由方程6x﹣4=x+4移项，得7x=0；④由方程2﹣ 两边同乘以6，得12﹣x﹣5=3（x+3）．错误变形的个数是 [ ]A.
4
B.
3
C.
2
D.
1
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皮皮学刷刷变学霸
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【单选题】The manager forced him ____ more though he was tired.
A.
do
B.
doing
C.
done
D.
to do
【简答题】Early one morning, more than a hundred years ago, an American inventor called Elias Howe finally fell asleep. He had been working all night on the design of a sewing machine but he had run into a very...
【简答题】Early one morning, more than a hundred years ago, an American inventor called Elias Howe finally fell asleep. He had been working all night on the design of a sewing machine but he had run into a very...
【简答题】Early one morning, more than a hundred years ago, an American inventor called Elias Howe finally fell asleep. He had been working all night on the design of a sewing machine but he had run into a very...
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