甲的收入比乙多25%,也就是乙的收入比甲少20%.______.
25%÷(1+25%),
=25%÷125%,
=20%;
乙的收入比甲少20%.
故答案为:正确.
The teacher couldn’t make himself ____ attention to because students were addicted to the short message.
A.pay
B.to pay
C.paid
D.to be paid
预测的第四步是()
A、确定预测方法
B、建立预测模型
C、提示课题和任务
D、评定预测结果