芳芳做一道加法题,她把第二个加数270看成了720,结果算出的和是960。你知道正确的和应该是多少吗?
960-720=240,240+270=510,正确的和应该是510。
This kind of bird is _____, and we should do what we can to _____ it. [ ]
A. dangerous, save
B. endangering, protect
C. in dangers, save
D. in danger, protect
怎样组织和管理盥洗活动?