I could speak French Chinese, but luckily I could talk with them in English

题干

I could speak French Chinese, but luckily I could talk with them in English.

A：both; and

B：neither; nor

C：either; or

上一题下一题 0.0难度选择题更新时间:2019-06-25 08:57:11

B

某生物兴趣小组为了探究某工厂排出的废水是否污染环境，设计了如下实验：

实验准备：生长状况相似的同种蚯蚓2条，喷雾器2个，清水，1%废水，将富含有机物的土壤均匀铺撒在大纸盒中，沿中线标识为甲、乙两个区域．

实验过程

请根据该实验，回答下列问题