在长期中要维持卡特尔是困难的,最重要的原因是( )。
A. 每个企业都有违约的刺激
B. 其他企业将进入该行业
C. 卡特尔中的企业都想退出,并不再勾结
D. 消费者最终会决定不买卡特尔的物品
[音频]Pat 1 (Alice, Alex, Alison)came to see Li Hong. They talked about the weather and the party last night. Pat didn't go to the party because it was so cold and2 (windy, rainy, snowy). It seemed that he didn't like the weather here. When Li Hong suggested a3 (walk, talk, work)in the afternoon, Pat thought it was too cold to go out because it was4(fourteen, thirteen, sixteen)degrees Celsius. Li Hong didn't agree. She said in winter, the weather could be much colder. Last winter, it was5 (three, six, seven)degrees below zero for three6 (weeks, days, months)and it was very windy.