下列事例中,属于防止惯性带来危害的是( )
⑴We can't swim in the lake?____ A.
⑵There is a toilet here.____ B.
⑶We should keep quiet in the library.____ C.
⑷We can't walk on the grass.____ D.
⑸We can eat here.____ E.
中英《南京条约》的各项内容中,能说明我国领土主权遭到严重破坏的是( )