Question

Stephen SpindlerStephen Spindler and his colleagues from the

Answer 1

主语 Stephen Spindler and his colleagues from the University of California at Riverside

谓语 have found

宾语从句：that some of an elderly mouse's liver genes can be made to behave as they did when the mouse was young simply by limiting its food for four weeks

simply by limiting its food for four weeks是补充说明的状语可以先不看

be made to do sth 表示被强迫（外力驱使下）去做某事

behave后面是从句的宾语部分如果要啰啰嗦嗦的写就是behave to do the things as they do when they are young 那些年纪大的老鼠会去做如他们年轻时做的事情（当然不是自发的,是被研究者驱使的