在微酸性条件下，通入H2S都能生成硫化物沉淀的是

You’ve done much of the work,nd plese leve ______ to us...

单项选择题You’ve done much of the work,nd plese leve ______ to us.the restB．the otherC．notherD．the othYou’ve done much of the work,nd plese leve ______ to us.the rest B．the other C．nother D．the others

Melville obviously holds a positive and optimistic view...

未知题型Melville obviously holds a positive and optimistic view toward life and human nature.

We have been friends and ________ for more than 20 year...

未知题型We have been friends and ________ for more than 20 years. （）