铝块能否被磁铁吸引呢？有同学说：“可以拿磁铁试一试．”就“试一试”而言，属于科学探究中的（ ）
A．观察
B．实验
C．假设
D．作结论
答案：B
根据句意及汉语提示写单词。
1. Please _____ (原谅) me for losing your pen.
2. He really _____ (珍爱) the present his grandmother gave him on his twelfth birthday.
3.If you want to do the work well, you should have lots of _____ (耐心).
4. It is well known how important a role _____ (模范) can be for us.
5. They thought the good harvest was a _____ (恩赐) from Heaven http://www.nciku.cn/search/en/
heaven.
标况下，电解一定物质的量浓度的CuSO4溶液一段时间后，加入0.2molCu(OH)2固体使溶液完全恢复到初始状态，则此过程中 * * 生气体
A． 6.72L
B． 8.96L
C．11.2L
D．5.6L
well, you should have lots of _____ (耐心).