题目

裸子植物和被子植物都属于种子植物，两者之间的主要区别是（） A . 生长环境不同 B . 种子外面是否有果皮包被 C . 在地球上出现的年代不同 D . 分布的范围不同 答案：BStudents in the USA often get to school be?tween 7:40 and 7:50. They usually take the school bus. Every student has a locker (柜子) .They can put their books,shoes and other things in their lockers. The school day begins at 8:00 am and ends at 3:20 pm. There is a break from 9:40 to 10 ：00. By the way (顺便说一下) ，each class is 40 minutes. All the seventh graders go to PE class from 11 ：30 to 12 ：30 each day.And then it's time for lunch. Here comes the food!There are about eight classes a day. They also have many kinds (种类) of afterschool activities (课外活动) .根据短文内容，回答下列问题。1. When do American students often get to school?2. Where can the students put their shoes?3. What time can students go home in the after?noon?4. How long is each class?5. Do students have many kinds of afterschool activities?