铸造
参考答案:
就是将熔融的液态金属或合金浇注到与零件的形状(尺寸)相适应的预先制备好的铸型空腔中使之冷却、凝固,而获得毛坯或零件的制造过程称为铸造生产,简称铸造。
句型转换。
1. The boy's mother usually walks to the office. (改为同义句)
The boy's mother usually goes to the office _____ _____.
2. Mr. Turner bought the car three years ago. (改为同义句)
Mr. Turner _____ _____ the car for three years.
3. This story excited me most. (改为同义句)
_____ _____ stones could make me so excited.
4. What do you think of the book Harry Potter? (改为同义句)
_____ do you _____ the book Harry Potter?
5. You must hand in your history homework by the weekend. (改为被动语态)
Your history homework _____ _____ _____ _____ by the weekend.
英国最早的定期报刊是(),这是经封建王朝特许出版的,只等译来自国外出版物的消息。