单选题 From the passage, we know that the advantages of the system might be ______.

A、 no limitation concerning noise, quick recognition of voices
B、 quick recognition of voices, offering all-day service
C、 offering all-day service, quick recognition of voices
D、 offering a clock round service in a high-noise environments quickly

【正确答案】 D

【答案解析】[精解] 细节题。文章第二段倒数第二句"The Speech Machine's system can operate in high-noise environments…"和第三段最后一句"Using the Net，the clients and typists can be anywhere in the world and the service will run 24 hours a day．"，就是the Speech Machine's system的优点，这与[D]说法一致，为本题的答案。