Part III Reading Comprehension (35 minutes)Directions:This pant is to test your reading ability. There are 5 tasks for you to fulfill. Youshould read the reading materials carefully and do the tasks as you are instructed.Task 1Directions:After reading the following passage, you will find 5 questions or unfinishedstatements, numbered 40 to 44.For each question or statement, there are 4 choices marked A),B),C) and D)You should make the correct choiceand mark the corresponding letter on the Answer Sheet with a single line through the center.Bus drivers must have a commercial(商业的)driver's license(CDL).This can sometimes be earned during on-the-job training. They must possess a clean driving record and may be required to pass a background check. They also must meet physical, hearing and vision(视力) requirements. In addition, bus drivers often need a high school diploma or the equivalent.Bus Driver TrainingBus drivers typically go through 1 to 3 monthsof training,but those who already possess a CDL may have a shorter training period. Part of the training is spent on a driving course , where drivers practice various skills with a bus. They then begin to drive in light traffic and finally make practice runs on the type of route that they expect to drive. New drivers make regularly scheduled trips with passengers and are accompanied(陪伴)by an experienced driver who gives helpful tips, answers questions, and grades the new driver's performance.Some driverstraining is also spent in the classroom.They learn their company' s rules and regulations,traffic laws, and safe driving practices. Drivers also learn about schedules and bus routes, fares, and how to communicate with passengers.40.What is a must to become a bus driver?

A reference letter.
B. A high school diploma.
C. A clean driving record.
D. 2 years'driving experience.