属于内部规模经济的是（ ）
A.集聚经济
B.辅助产业的存在
C.风险承担经济
D.支持性服务的存在
正确答案是C
Choose the closest paraphrased version after the following sentence or the italicized part. Blacken the letter corresponding to your choice on the ANSWER SHEET.
You must not expect that they [your children] will enjoy your comp
