问题
填空题
已知
|
答案
把
代入方程3mx+2y=1,得x=-1 y=2
-3m+4=1,
解得m=1.
已知
|
把
代入方程3mx+2y=1,得x=-1 y=2
-3m+4=1,
解得m=1.
选用框内单词的适当形式填空。 | |
to school by ___________ and then he ___________ to work. Mrs. Green ___________ a housewife. She always goes ___________ at 9 a. m. At noon, Mrs. Green ___________ has lunch at home only ___________ herself. In the evening, Mr. Green comes home from work ___________ the children come home from school. Mrs. Green often cooks big ___________. After supper, the children do ___________ homework before they go to bed. |