土壤胶体结构是由（）组成
a、微粒核和双电层
b、微粒团和双电层
c、微粒和双电层
d、胶粒和双电层
参考答案：A
- Have you heard that Tom was given a good beating by his father last night?
- He __________ it. He was making trouble everywhere all the time.
A．made
B．got
C．received
D．deserved
