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
一般情况下,人体一次失血量不超过血液总量的10%,对身体健康没有太大影响.
读太阳系局部图,图中C所在区域为小行星带,回答问题。