一项实验表明,在牛的屁股上画上眼睛可能有助于保护它们免受狮子等大型捕食者的攻击。1.B.根据第一段 Protecting cows could also wind up protecting the lions-from angry farmers以及策二、三段内容可知,对牛的保护最终也会保护狮子等食肉动物免受愤怒的农场主的伤害,有助于维护当地生态系统的平衡,故选B项。2.C.根据第五段 If they feel like they've' been noticed, they often look for another target可知,假的眼睛能发挥作用是因为如果狮子觉得自己被发现了,它们通常会选择放弃攻击转而寻找其他目标。3.B.根据倒数第二段 The scientists were surprised to learn hat even Xs seemed to give the cows some protection.only4 of the543 cows with Xs were killed知,科学家感到意外的是甚至涂上Xs似乎也能对牛起到保护作用。4.A根据最后一段可知,就目前而言,给牛屁股上画假眼睛似乎是保护该地区奶牛的一种既宜又简单的方法。但是,长期效果如何尚不确定。由此可见作者对该研究结果持客观态度。