1：Which of the following statements is the reason why the Tucson Unified School District in Arizona began classes in August?
A:The earlier start time enables students to take semester exams before winter vacation.
B:Chyrl Hill Lander thinks it is good for students.
C:Winter vacation is in December.
D:The students have to prepare for the tests.
2:Which of the following can be the best title for the passage?
A:Labor Day in the Unites States
B:American public schools
C:The start time of American public schools
D:Labor Day and American Public schools
3:Why do most Americans like summer?
A:The weather is warm.
B:People do not have to go to schools.
C:Sunny days and warm nights.
D:Both A and C.