— Cloning can lead to many complicated problems.
— __________. That's why a lot of people are strongly against it.
A：That's it
B：Nonsense
C：That's all right
D：What a pity
甲、乙两车间排放出的污水中分别含有大量且不同的4种离子，这些离子是Ag+、Ba2+、Fe3+、Na+、Cl﹣、NO3﹣、OH﹣、SO42﹣．经检测，甲车间的污水PH＞7，则下列判断正确的是（ ）
化学与人类生活、生产息息相关．请回答下列问题：
—____they ____ there by bus?
—____, they ____.
新文化运动中的两面大旗是（ ）
