考试辅导：2012年职称英语理工类A级模拟（三）及答案（6）

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第三篇
  p0 C* B: E* |1 I& MPool Watch
$ j4 `1 I& [- x1 m3 b$ o! T, `Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. A report says that on average 15 people drown in British pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning.
+ m8 X0 B! @4 C& J9 j* l# l4 ~When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard's pager (呼机). In trials at a pool in Ancenis, near Nantes, it saved a life within just a few months, says Alistair McQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overhead video cameras. AI software analyses the images to work out swimmers' trajectories (轨迹). To do this reliably, it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool.
) o8 S  V) T# p6 [1 E" p% zIt does the same with an image from another camera viewing the shape from a different angle. If the two projections are in the same position, the shape is identified as a shadow and is ignored. But if they are different, the shape is a swimmer and so the system follows its trajectory.
To pick out potential drowning victims, anyone in the water who starts to descend slowly is added to the software's "pre-alert" (预先警戒) list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures (使模糊) the pool's floor texture when viewed from overhead. If so, it alerts the lifeguard, showing the swimmer's location on a poolside screen.
" V; G) G8 ^% s& y0 l3 rThe first full-scale Poseidon system will be officially opened next week at a pool in High Wycombe, Buckinghamshire. One man who is impressed with the idea is Travor Baylis, inventor of the clockwork (时钟装置) radio. Baylis runs a company that installs swimming pools - and he was once an underwater escapologist (脱身杂技演员) with a circus (马戏团). "1 say full marks to them if this works and can save lives," he says.
11 AI means the same as
! N0 X, x5 m# ?2 cA　an image.
( W; W% G& {( X+ U* C. \B　an idea.
C　anything immobile.
D　artificial intelligence
12 To save a life, AI software must be able to
9 l. u7 ]) A. ^0 lA　descend in the water.
B　videotape every movement.
C　distinguish between a swimmer and a shadow
D　save a life within a few months.
# S+ y" a2 R7 p8 ]13 How does Poseidon save a life?
. m6 J. n0 \6 F6 {/ L$ r$ V& U* pA　It orders an underwater robot to rescue the drowning swimmer.
B　It alerts the lifeguard.
C　It displays the swimmer's shadow on the screen.
D　It watches the pool through dozens of overhead cameras.
14 Which of the following statements about Travor Baylis is NOT true?
9 r- O$ N3 |9 |0 P/ c5 iA　He owns a swimming pool.
) \* Y7 J+ Q9 }, MB　He invented the clockwork radio.www.Examw.com
C　He was once an entertainer.
" x0 V# y: ^' c: G: b" l1 ^. FD　He runs a company.
15 How does Baylis look at the Poseidon system?
8 U# y7 t. Q# w) c9 X6 N7 bA　He thinks it is too expensive.
B　He thinks it is a good system.
8 D( T! F+ Q8 S# c- MC　He thinks it is not efficient enough.
D　He thinks it is as good as the British pool Watch system.
0 a9 [/ ?' q. F- }答案：41. D　 42. C　 43. B　 44. A　 45. B