WLANs are increasingly popular because they enable cost-effective connections among people, applications and data that were not possible, or not cost-effective, in the past. For example, WLAN-based applications can enable fine-grained management of supply and distribution (1) to improve their efficiency and reduce (2) . WLANs can also enable entirely new business processes. To cite but one example, hospitals are using WLAN-enabled point-of-care applications to reduce errors and improve overall (3) care. WLAN management solutions provide a variety of other benefits can be substantial but difficult to measure. For example, they can protect corporate data by preventing (4) through rogue access points. They help control salary costs, by allowing IT staffs to manage larger networks without adding staff. And they can improve overall network management by integrating with customers’ existing systems, such as Open View and UniCenter. Fortunately, it isn’t necessary to measure these benefits to justify investing in WLAN management solutions, which can quickly pay for themselves simply by minimizing time-consuming (5) and administrative chores.

5（）

A．exploitation

B．connection

C．department

D．deployment

阅读下列文字，然后回答下列问题。
这里我们可以再就用兵打比譬，用兵致胜的要诀在占领要塞，击破主力．要塞既下，主力既破，其一切就望风披靡，不攻自下。古人所以有“射人先射马，擒贼先擒王”的说法。如果虚耗兵力于无战略性的地点，等到自己的实力消耗尽了，敌人的要塞和主力还屹然未动，那还能希望打什么胜仗做文章不能切中要害，错误正与此同。
1.文中“射人先射马，擒贼先擒王”这两句诗出自何处运用了什么修辞手法