=270×36
=9720（个）
答：这批零件一共有9720个
将下面的短文抄写在三线格中，注意大小写及标点符号。
his name is Tony smith. He's from cambridge. In his class, Tony and Lingling are thirteen years old and daming is twelve years old. they are good friends.
在动物的运动方式中，能适应更广阔空间生活的是（ ）
根据你所掌握的历史知识，解释“正十年”一词所含的知识信息。
