2012年大学英语六级考试考前预测卷（第一套）_第7页

Part IV Reading Comprehension (Reading in Depth)    (25 minutes)

 Section A

注意：此部分试题请在答题卡2上作答。

47. The warnings from electronic road signsare not working as well as expected because people usually ________.
45. The in-car computer system, whichNikolaos Georgis has filed for a US patent, provides a nationwide database of  ________.
49. The speculatior raised by Pertti Peussais based on a function of the in-car computer that prevents the car exceedingcertain speeds when ________.
50. Laser is not regarded as the bestoption of detecting surface conditions for it always fails to detect ice under thecondition of  ________.
51. What could be the obstacle to theultimate aim of designing friction sensors?