太阳的能量源于[ ]
A、黑子和耀斑的强烈活动
B、强烈的太阳风
C、内部物质的核聚变反变
D、放射性元素衰变产生的热能
答案：C
After studying in a medical college for five years, Jane _____ her job as a doctor in the countryside. [ ]
A. set out
B. took over
C. took up
D. set up
细能力汇总报告可以查询到下达负荷（）
