“Visitors to the 2010 World Expo in Shanghai will be able to go sightseeing in super cool cars with no drivers,” Shanghai city government speaker said recently.
When the six-seat car was shown to the public, it interested many people. “The car will help visitors feel what high technology（技术）is and help them enjoy the tour of the World Expo site,” said a teacher from Tongji University. The car, 4.5 meters long, 1.7 meters wide（宽）, and 1.6 meters tall, runs along a white line. The car costs around 300,000 yuan to build and can reach a top speed of 50 kilometers per hour.
According to the researchers, visitors will be able to driver the car anywhere in the World Expo site by pressing a button（按按钮）. If they want to get off or stop the car, all they need to do is just to press the button again.
“People can rent one of these cars for a whole day or just take a ride in it from one place to another,” the teacher said. About 400 to 500 of these cars will be made for the Expo in 2010. the cars will have radar（雷达）to help them get around. They will mainly use solar（太阳能）batteries. And they have no need of drivers and oil（汽油）, these cars will help save energy and human work, and cause no pollution to the environment.
小题1:The new type of car has _____ seats.
A. seven B. six C. five
小题2:According to this passage, which of the following is TRUE?
A. The car can reach a top speed of 50 kph.
B. The car costs about 30,000 yuan to build.
C. The car is 4.5 meters long and 1.7 meters tall.
小题3:Which of the following is not mentioned in this passage?
A. People can buy this type of car and drive it in the World Expo site.
B. This type of car can save energy and human work, and cause no pollution.
C. People can press the button themselves when they want to get off or stop the car.
小题4:The title（标题）of the passage is probably “_____”.
A. Radar First Used in Cars
B. Cool Cars with No Driver
C. Tour the 2010 World Expo |
若
，求实数a的取值范围．
