A:{x+2y=50y=3x
B:{2x+y=75x=3y
C:{2x+y=75y=3x
D:{x+2y=75x=3y
计算:﹣4﹣5=____
有23个蘑菇要装袋,下面有三种装法,你喜欢哪种装法?圈一圈,填一填。____
我选的是第____种装法。按照这种装法,这些蘑菇可以装____袋,还剩____个。
23÷____=____(袋)……____(个)
——She's seldom asked to do housework at home, she?—— . Her parents are very busy with their work, so she has to do the laundry every day.