A、75000 B、50000 C、25000 D、100000 A

The young executive weaving through the traffic in his BMW, one hand on the steering wheel, the other holding a telephone, has become a familiar sight on our city streets. It doesn’t look safe and it isn’t. It is not just that the serous discussion he is having is distracting. There is also the tangled cable by the gear lever and the fact that he’s only got one hand free if someone suddenly steps off the kerb.
    Car phone have been available in Britain since 1959 but have only become common since January 1985 when two "cellular" systems were introduced. These are licensed by the government and take advantage of new technology and ultra-high radio frequencies. About 2500 subscribers were expected in the first years of operation but the actual figure for 1985 was more than double that. It is estimated that 75000 cellular phones were then in use, and there were well over 100000 by the end of 1986.
    The Highway Code has been rewritten to include a warning that driver should not use hand-held telephone when the car is moving, because the drivers may concentrate more on the phone-work than the road ahead. Authority warns that those who drive and talk into a telephone will be prosecuted.