污染物进入人体的途径有表面吸附、吸收、生物浓缩等几种。
A. 对
B. 错
环境问题包括环境污染和生态破坏。……………………( )
A. 对
B. 错
The city wall of Pingyao Ancient City is 46 kilometers. It is about 10 meters high and 3 to 6 meters wide on top.
A. 对
B. 错
The layout of the ancient city looks like a giant dragon because Chinese are the offspring of the dragon.
A. 对
B. 错