To understand the sentence, you should analyze its parts ________.

.车辆行驶形成高速气流和自然风力的作用,（）垃圾积存最多。

I was really anxious about you. You ______ home without a word.

一级道路路面果皮(片/1000m2)控制指标为

Very few people understood this contract, ______ was very obscure.

_______ that the scientist will give us a talk next month?

泰罗的科学管理思想反映在他的代表作()之中。

人工清扫的道路应该先清扫（）。

预算定额是以()为对象编制的。

设积分区域D：x²+y²≤4，则二重积分