小明早上6：50来到学校大门口，还要等15分钟学校才开大门，学校早上开大门的时间是______．
根据题意可得：
分针走一个大格是5分钟；
15÷5=3（个）；
15分钟，分针走了3格大格；
6：50，分针指在10上，分针走2个大格，也就是指在12，这时是7：00；
分针还要再走3-2=1个大格，这时，分针指在1上，时间是：7：05；
也就是学校早上开大门的时间是7：05．
故答案为：7：05．
| 一、填入单词，完成下面一段话。一空一词。 | ||||||
| Welcome 1________ the Science Center (科技中心). We 3________ an exhibition hall (展厅) and a movies show room 2________ the first floor. The exhibition 4________ is on 5________ left and the show room is on the 6________. On the 7________ floor, we have five 8________: the computer training (培训) area, the games area, the space technology (航天科技) area, the library and the biology specimen (生物标本) area. 9________ the gate, you can see the library on your 10________. The biology area is on your right. The computer training area is behind the library. The space technology area is behind the biology area. The games area is 11________ the training area 12________ the space area. It's 13________ the middle. You can see lots 14________ interesting documentaries in the movies show room. You can also enjoy the new Hi-tech (高科技) in the exhibition room. You can 15________ books in the big library. You can learn a lot 16________ computer in the training area. You can play interesting new 17________ You can see a space shuttle (宇宙飞船) in the space area. If you like 18________, you can see lots of specimen. Just come and have a wonderful day here! | ||||||
| 二、请认真阅读上面的文字，依照它绘制出科技中心的平面图，并且标明每个区域的名字。 | ||||||
|
