减数是195,差是368,被减数是多少?
368+195=563.
The library needs __, but it will have to wait until Sunday.
A.cleaning
B.to clean
C.clean
D.being cleaned
慢性炎症局部肿胀的机制主要是
A.充血
B.渗出
C.浸润
D.增生
E.机化