计算：（-a2）3=______．
（-a2）3=-a2×3=-a6．
故填-a6．
并联电路的总电阻小于任一支路的电阻；若某一条支路电阻减小，则总电阻 ；若少一条支路，则总电阻 ；（填减小、增大、不变）
根据汉语意思填写句子。
1. —Where is John's seat? —It's ______(紧挨着) Mike's.
2. There is a tall tree ______(在前面) the house.
3. Give me ______ (一份) newspaper.
4. That child was born in ______ (狗年).
5. I have a pen in ______ (以……形状) a rabbit.
