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- 1初一数学(一定要是一元一次方程)
- 2某工厂计划在两个月内将用水量减少36%,如果每月平均节约用水的百分数相同,求这个百分数.
- 3p是线段ab上的一点,若ap与pb的长度之比是9;4,怎ab与pb的长度之比是?
- 4i want to buy a nice present___my mother and i must give it___her myself
- 5Tom had to stay at home yesterday.改为一般疑问句
- 6已知x²+y²+4x-6y+13=0,则x/y的值为( )
- 7从1—2004的自然数中取出两个数,要它们的和大于2004,共有( )不同取法
- 8In a mid-western city of Chicago there are more than one million black residents——____________
- 9What is the sun made up of?
- 10试证:完全平方数个位数字是奇数时,其十位数上的数字必为偶数