单选题 It can be inferred from this passage that the new system ___________.

A、 has been put into practical use
B、 is still on the planning table
C、 is still in the experimental stage
D、 needs to be improved

【正确答案】 B

【答案解析】[解析]事实细节题。文章最后一段首句指出“The system is in the projecting stages at present．”(目前这一系统仍处于筹划阶段。)由此可知，B)项为正确答案。避错指导根据最后一段“Before it can be developed commercially”可知，这一系统目前尚未投入实际应用，故排除A)；C)项“仍处在实验阶段”和D)项“需要被改进”均与最后一段内容不符，故排除。