请根据以上资料，选择以下栏目的正确选项：
“保费”栏：（）。
A．502/200/3
B．502/200/2
C．150
D．0.20
参考答案：A
根据句意，在每个句子的空白处填入一个适当的词，使句子意思完整，语法正确。
1. Amy began ice skating ________ the age of four.
2. Liu Xiang was ________ in 1983 in Shanghai.
3. Yesterday I did some morning exercises and ________ a little breakfast.
4. I stayed at home and ________ TV yesterday.
5. The boy ________ Li Ming is my friend.
下列（）裂纹属于热裂纹。
A.多边化
B.层状
C.延迟
