食品解冻的目的是使食品温度回升到必要的范围，并保证最完善地恢复其原有性质。
参考答案：对
Like most of my schoolmates, I have neither brothers nor sisters - ______, I'm an only child. [ ]
A. in a word
B. in other words
C. more or less
D. far and near
HIV感染者在病程中发生皮肤粘膜病变的占()
A．50%
B．70%
C．80%
D．90%
