下列选项中，除哪项外均属前胡的性状鉴别特征（） A.呈不规则的圆柱形、圆锥形或纺锤形

American school life is different from (和……不同) Chinese. American students usually get to school at around 8:30 in the morning. They put their school bags in their lockers (柜子) and only take one book, one notebook and one pen to each class. In class, American students can sit in their seats (座位) when (当……时候) they answer their teachers questions
At around 12:00 students have lunch. American students don’t go home for lunch. They have it at school. Most students like pizza(比萨), hot dogs or hamburgers. At 1:00 in the afternoon, they start to have classes. Their classes are usually over(结束) at three o’clock. Then they join in the activities （活动）of clubs or sports.

Time	Activities
At 8:30 am	小题1:__________
At 12:00	小题2:__________
小题3:_______	Have classes
After 3:00 pm	Join the clubs or play sports