和政府一直强调，“要千方百计增加农民收入，关键是大力推进农业和农村经济结构的战略性调整。”经济结构的调整体现的哲学道理是[ ]

A．构成事物的成分在结构和排列次序上发生了变化，也能引起质变

B．量变和质变是事物变化的两种状态

C．经济结构不调整，经济就不会长足发展，农民收入也不会增加

D．经济结构的调整是经济工作的重中之重

The southern provinces in China were almost struck by the rare snow at that time,  and people there

were badly ________ food and shelter. [      ]

A. in need of  

B. in course of

C. in charge of  

D. in possession of