The building ________, for which all the villagers collected money, is an animal lab.
A:under construction
B:sets up
C:without destination
D:puts up
丁丁在计算一个两位数加30时,把3加到了个位上,得到的结果是57。正确的结果是多少?
下列说法正确的是( )
40°N的某地属于 ( )