旅馆对旅客遗留的物品，经招领（）后无人认领的，应当造册登记，并送当地公安机关按拾遗物处理。
A.15天
B.30天
C.三个月
D.六个月
参考答案：C
在热传递的过程中，高温的物体将放出______，它的内能______；低温物体则吸收______，它的内能就______．
What does the speaker think about age and work
A．Generally speaking, work gets much easier after 40.
B．Generally speaking, work gets much harder after 40.
C．Age and work are not correlated.
D．He is undecided.
