问题
判断题
以减压为目的的抛填棱体一般采用梯形和锯齿形断面，在减压效果相同的情况下，梯形比锯齿形节省用料。
答案
参考答案：错
搜题请搜索小程序“爱下问搜题”
以减压为目的的抛填棱体一般采用梯形和锯齿形断面，在减压效果相同的情况下，梯形比锯齿形节省用料。
参考答案：错
| 完形填空。 | ||||
| This is our school library. It is 1 from 8:30 2 11:30 in the morning and from 2:00 to 5:00 in the 3 . Our school library is not very 4 . It has only two reading-rooms and about 2000 books. We often come here 5 class. You can 6 one book at a time, and keep it 7 two weeks. In the reading-rooms, there are many desks and 8 . We can sit there reading books 9 doing our homework. It's a 10 place for us students. | ||||
|