环境污染物进入人体的主要途径是
A.皮肤、粘膜和结膜
B.血液、唾液和淋巴液
C.呼吸道、消化道和皮肤
D.鼻腔、口腔和眼
E.腮腺、淋巴腺和扁桃腺
参考答案:C
若一个圆锥的侧面展开图是一个半径为8cm的半圆,则该圆锥的底面半径为( )cm。
The Los Angeles district attorney on Monday charged Michael Jackson's personal physician, Conrad Murray, ______ involuntary manslaughter in connection with the pop icon's death in June.
A.of
B.for
C.with
D.as