低温冷藏库温度一般为（）℃之间。
A.－5～0
B.0～5
C.－5～－15
D.－15～－30
参考答案：D
人体生命活动所需要的能量主要来自_______。________是储备的能源物质。
–Jim went swimming with his parents yesterday afternoon. –______.
A．So Mary did
B．So Mary does
C．So Mary was
D．So did Mary
