[解析]
(1)D.细节理解题。根据◆ At School中第一段Students stay in their homerooms for most of the school day.(学生们在校的大部分时间都呆在他们的教室里。)和Between classes and at lunchtime,classrooms can be noisy,lively places.Some schools may have a cafeteria (自助餐厅),but most do not.In most schools,students bring a box lunch from home,prepared by the mother in the early morning hours. (课间和午餐时间,教室可能是嘈杂、热闹的地方。有些学校可能有一个自助餐厅,但大多数没有。在大多数学校,学生从家里带来一盒午餐,由母亲在清晨准备。)可知,大多数日本高中生经常在教室吃午饭。故选D。
(2)A.数字计算题。根据◆ At School中第二段Japanese high school students spend 240 days a year at school,60 days more than American students.(日本高中生每年在学校的时间为240天,比美国学生多60天。)可以计算出,240﹣60=180,所以美国学生一年在学校的时间为180天。故选A。
(3)C.猜测词义题。根据◆ At School中第二段中的All the students in one grade level study the same subjects.Given the number of required subjects,electives (选修课) are few.(同一年级的所有学生学习相同的科目。考虑到必修课的数量,选修课很少。)可知,日本学生除了学习必选课,很少有选修课。因此划线的词rarely意为"很少",结合选项A.always总是;B.never从不;C.seldom很少;D.often经常。故选C。
(4)C.推理判断题。根据第二段可知,日本中学每班通常有40至45名学生,故A项错误;根据第二段中的Only for physical education,laboratory classes,or other subjects requiring special facilities(设备) do students move to different parts of the school.(只有体育课、实验课或其他需要特殊设施的课程,学生才会搬到学校的不同地方。)可知,学生体育课是不在教室上的,故B项错误;根据最后一句Clubs meet for two hours after school each day and many clubs continue to meet during school vacations.
(社团每天放学后会有两个小时的聚会,许多社团还会在学校放假期间继续聚会。)可知,很多学校的俱乐部在假期期间正常活动,故D项错误;根据第三段最后一句Given the number of required subjects,electives are few.(考虑到必修课的数量,选修课很少。)可知除了必修科目外,可供学生选择的科目很少,C项正确。故选C。