At summer picnics, there is often an informal（非正式） baseball game. Boys and girls, young and old take turns to bat. Each team has 9 players.

　　The baseball season goes from April to September. During this time, baseball matches are shown on TV and members of the important baseball teams become America's heroes（英雄）. At the end of season the two top teams play against each other. Many baseball fans（热情的追随者）go along to watch the game. Millions of others listen to the radio and watch TV. People seem to talk only about the game. Even long after it is over, they still talk about the result and the players.

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　 Suzhou Kinglong Higer Bus announced on March 14 that the first 60 new-generation school buses, KLQ6706X, rolled off the assembly line and were delivered to Shandong and Hunan Provinces. The 10-meter-long bus with 56 seats (including driver) features all the safety highlights, including eye-catching bright yellow paint, classic long nose, high-strength birdcage vehicle structure, extra-thick cushioned back and armrest, electric rearview mirror(后视镜),and blind-spot-free reversing(倒车)monitor.

　 In comparison with those with flat front, the American-style long-nosed buses are more effective(有效的)in protecting both driver and passengers in case of frontal collision（碰撞）. The back safety door is wide enough for wheel chairs.

　 Higer Bus has studied and learned from the designs of US school buses. Higher school bus has white flickering lights similar to Blue Bird vehicles to remind the drivers in front and behind. The safety bell fixed on top of the bus makes different sound from ordinary bus horn and is easy for students and parents to know a school bus is coming. The new buses are sturdy enough so that parents shouldn't be worried about their children,

　 The G-BOSS smart operation system has three main functions of safety driving, GPS positioning, and 3G video monitoring.

　 There are five cameras on the bus for reversing, for checking situations in front of and behind the bus, as well as for monitoring(监视)students and the driver. They can record and send the video through 3G network to backstage server, which helps to prevent overload and to identify responsibility in case of road accident. Kinglong also promises assistance in building School Bus Safety Management Center so as to monitor closely the status and position of buses as well as the road behavior of drivers.

54. How many students can a new school bus at most carry?

A. 56　　　　　 B. 60 　　　　 C. 55　　　　　　 D. 57

55. The underlined word "sturdy" most probably means"_______".

A. not easily destroyed 　　　　　B. modern and expensive

C. easy to drive 　　　　　　　　D. cheap and comfortable

56. What are the cameras on the bus used for?

A. checking situations in front of and behind the bus　 B. reversing

C. monitoring students and the driver　 　　　　　　D. all the above