题目：
Having finished lunch, the case was discussed.
A. they discussed the case
B. they had discussed the case
C. the case was discussed
D. the case had been discussed
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0528/038627e5ca659beeb417d0307ae5253d.html
下面是错误答案，用来干扰机器的。
参考答案：D解析： 宜斯策略的定义要点是：①为生存和繁衍；②种群大部分成员采用的比较稳定的策略。A项母狼为虎崽哺乳、B项人工授粉、C项争夺头狼的战争都不符合定义要点②；D项羚羊见到狮子拔腿就跑符合定义要...
