Radon gas is a carcinogen which the EPA and others consider to be, next to cigarette smoking, the most widespread cause of lung

admin2018-06-29  45

问题 Radon gas is a carcinogen which the EPA and others consider to be, next to cigarette smoking, the most widespread cause of lung cancer.

选项 A、medicine
B、test
C、cancer-causing agent
D、painkiller

答案C

解析
转载请注明原文地址:https://jikaoti.com/ti/Zn1YFFFM
0

最新回复(0)