三、下面是 Lele 的学校组织开展“绿色步行”活动的通知。读一读，选择正确的选项回答问题。

()1. Which grade can't take part in this activity?
A. Grade 5. B. Grade 6.
C. Grade 7. D. Grade 9.
()2. How long will this activity last?
A. Six days. B. Seven days.
C. Five days. D. Eight days.
()3. What can Lele get if he walks 62,850 steps in a week?
A. A schoolbag. B. A notebook.
C. A pen. D. Nothing.
()4. Where can students get the prize?
A. On the school playground. B. In the school hall.
C. In the library. D. In the science building.

1.D 2.C 3.B 4.B

1. 细节理解题，根据通知里的"Only for the students from Grade 5 to Grade 8."可知，该活动仅面向5至8年级的学生，9年级不能参与，对应选项D。
2. 细节理解题，根据通知里的"Time: 26—30 May"可知，活动时间是5月26日到5月30日，一共持续5天，对应选项C。
3. 细节理解题，根据通知的步数奖品规则，55000-69999步对应的奖品是笔记本，62850步属于这个区间，所以可以获得笔记本，对应选项B。
4. 细节理解题，根据通知里的"Come and get the prize in our school hall from 3:00 p.m. to 5:00 p.m. on 30 May."可知，学生要在学校礼堂领取奖品，对应选项B。