It was a difficult time for the relatives of Missing MH370 passengers when they heard the bad news, but they didn't ________ hope.
A:give out
B:give off
C:give in
D:give up
如图,将△ABC放在每个小正方形边长为1的网格中,点A、B、C均落在格点上,用一个圆面去覆盖△ABC,能够完全覆盖这个三角形的最小圆面半径是( )
下列有关水螅的说法,正确的是( )
一向要强的小强走进中学时,信誓旦旦,说要怎么样努力学习,实现自己的理想。可一段时间后,他慢慢失去了信心,感到迷茫。请你帮助他指点迷津。