A:can; must
B:can; may
C:must; ca
D:may; must
下列不属于生命现象的是
I'll give a talk tomorrow. I'm thinking about _______.
摄氏温标规定:在通常情况下把 ____的温度规定为0摄氏度,把 ____的温度规定为100摄氏度.