土壤容重
参考答案：
田间自然垒结状态下单位容积土体（包括土粒和孔隙）的质量或重量。
根据括号中所给的汉语写出单词，使句子意思完整正确。
1. Boys and girls, I have something important to tell you. May I please have your (注意)?
2. Andy found it hard to (相信) that Steven was a real detective.
3. Farmers complained the (不公正的) competition from cheap imported (进口的) food.
4. Do clothes (熨烫) more easily when they are wet.
5. (刀) and forks will be necessary when we have western food.
《中华人民共和国合同法》规定，当事人应当遵循诚实信用原则，根据合同的性质、目的和（）履行通知、协商、保密等义务。
A.交易方式
B.交易习惯
C.交易方法
D.交易形式
