测有机物的水样,多选哪种容器作为盛水容器()
A.塑料瓶
B.玻璃瓶
C.药瓶
D.矿泉水瓶
E.啤酒瓶
参考答案:B
解析:塑料能吸附有机物,测水样中的有机物最好使用玻璃瓶。
从意识内容看,意识是 [ ]
A.人脑的机能
B.客观存在的主观映象
C.物质的产物
D.自然界长期发展结果
用所给词的适当形式填空
1. There ______ (be) a picture on the wall.
2. Are there ______(some) teachers in the classroom?
3. There ______(be) two pencils and a pen on the desk.
4. In the classroom, there ______ (be) ten students and a teacher.
5. There aren't any ______ (apple) in the box.