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- 1he was reported to have covered 30 miles on foot that day.为什么用have done?
- 2根据运算定律,填出适当的数字或字母6(a-5)=( )
- 3把一个周长是25.12分米的圆形纸片沿直径切成两个半圆,每个半圆的周长是( )分米. A.12.56 B.16.56 C.20.56 D.以上三个答案都不对
- 4Would you mind my______?
- 5组成同轴电缆的两个很长的金属圆柱面,同时通有均匀电流I,但方向相反,这两圆柱面之间距轴线为r处的磁感应强度大小为()?
- 6哇哈哈矿泉水每瓶售价1.2元,现甲.乙两家商场给出优惠政策:家商场全部9折,乙商场20瓶以上的部分8折.若你
- 7有理数和无理数的概念是?
- 8数字9的意义
- 9He likes (go)to the movies with his frend (play)sports.
- 10我要有步骤,比如说用到哪个方程式,排什么式子,