A:熔化
B:汽化
C:升华
D:凝固
近期我市电视台播报市中心血库O型血告急,许多市民纷纷到各血站无偿献血.有关叙述错误的是( )
It's reported that people throw plastic bags along this street every day.
如图,三棱柱A1B1C1—ABC中,侧棱AA1⊥底面A1B1C1,底面三角形A1B1C1是正三角形,E是BC中点,则下列叙述正确的是( ).