.在下列经济数量关系中，一般情况下能够通过图表示的有

①价格与需求 ②社会劳动生产率与商品的价值量

③流通中所需的货币量与货币流通速度

④股票价格与银行利息率

⑤公平与效率 ⑥收益与风险

A．①②③④

B．①③④⑤

C．②③④⑥

D．②③⑤⑥

With hundreds of millions of electronic (46) taking place daily, businesses and organizations have a p incentive to protect the (47) of the data exchanged in this manner, and to positively ensure the (48) of those involved in the transactions. This has led to an industry-wide quest for better, more secure methods for controlling IT operations, and for deploying p security mechanisms deeply and broadly throughout networked infrastructures and client devices. One of the more successful concepts to engage the imaginations of the security community has been the development of standards-based security (49) that can be incorporated in the hardware design of client computers. The principle of encapsulating core security capabilities in (50) and integrating security provisions at the deepest levels of the machine operation has significant benefits for both users and those responsible for securing IT operations.

A. identities B. homogeneities C. creations D. operations