根据IARC的分类标准，对人类致癌证据有限，对实验动物致癌性证据充分的致癌物是（） 发布时间：2017-05-11 15:39 │ 来源：www.tikuol.com 题型：单项选择题 A1型题 问题： 根据IARC的分类标准，对人类致癌证据有限，对实验动物致癌性证据充分的致癌物是（）A.人类致癌物 B.对人类很可能是致癌物 C.对人类可能是致癌物 D.未分类 E.非致癌物
题型：单项选择题 A1型题 阅读小天地。根据短文内容，完成下列表格。 Hello, I am Nina. I go to school from Monday to Friday. We have four classes in the morning and two in the afternoon. After school, I have many activities. I play ping-pong on Mondays. I play basketball on Tuesdays. I listen to music on Thursdays. I do my homework in the evening. I often read books and watch TV on Saturdays. I play computer games on Sundays. I love weekends. How about you?Nina's Weekdays and WeekendsMonday1. __________________________Tuesday2. __________________________ Thursday3. __________________________Saturday4. __________________________Sunday5. __________________________ 查看答案
题型：单项选择题 A1型题 在拍摄池中的游鱼时，常在照相机镜头前装一片偏振滤光片使得景象清晰。这样做是为了（）A、增强透射光的强度B、减弱透射光的强度C、减弱水面反射光的强度D、增强水面反射光的强度 查看答案