题目内容：

 

To build a safer car，Japanese automakers are trying to replace the driver．

Inspired by statistics blaming human error for most accidents，Toyota and its competitors are designing“intelligent’”cars that can almost drive themselves on the high way．

The systems are designed to reduce human tiredness and the mistakes that often result．This kind of support is what drivers need most in a country with some of the most crowded roads in the world．That is why it should not be surprising that Japan is leading the race to make cars smarter．

To provide a safer ride，Japanese automakers are turning to technologies like laser radar and machine vision to replace tired eyes and wandering minds．

An infrared（红外线的）radar unit fixed on the bumper is part of a new cruise（巡航）control method that Toyota introduced in August 1997．It’s now an optional（随意的）feature on its Celsior luxury car that costs 70000 yuan （$648）．

The“adaptive”system tracks（尾随）the car ahead，and slows down or speeds up the car automatically to keep a safer distance in highway traffic．The same technology has also been used by some cars made by Toyota’s competitors．

Subaru，a type of its Legacy wagon，made its first appearance last September with Active Driving Assist（ADA），which besides adjusting cruising speed，sounds an alarm if the car goes out of its lane or makes a turn too fast．In the latter case，it down shifts gear even before the driver starts to brake．

An even smarter system is coming from Honda．Called Honda Interlligent Driver Support（HIDS），it “sees”the road through a tiny camera on the windshield and helps steer（操纵）the car down the middle of lane（车道）．

A computer picks out line on the highway surface and touched the car’s steering wheel in the right direction．

Honda got approval in March to start testing HIDS on the highway and says 1t will arrive in showrooms in the near future．

1.Why are Japanese automakers developing cars that can almost drive themselves on．the highway'?

A．Because they want to win the car competition．

B．Because many accidents resulted from the mistakes made by drivers．

C．Because drivers are always tired when driving the car．

D．Because people don’t want to drive the cars themselves．

2.What is the main purpose for the automakers to design the system of the new cars?

A．To make them run faster so that they can sell them at higher prices．

B．To make them keep to the lane without being controlled．

C．To help drivers make fewer mistakes so that accidents can be avoided．

D．To use some advanced devices like laser radar and machine vision．

3.We can infer from the passage that                ．

A．accidents always occur in the crowded streets

B．traffic accidents are likely to happen when drivers are tired and careless

C．accidents happen because traffic rules are not obeyed

D．many accidents occur because there are no advanced system

4.If you drive the car with HIDS，you will find           ．

A．your car 1s always keeping the right direction

B．your car is slowed down or speeded up automatically

C．your car is controlled by an Infrared radar

D．you are always keeping a safer distance on the high-way