用some, any填空。

1. There's ______ water in the cup. 

    There isn't ______ tea in the cup.

2. Is there ______ bread here?

    Yes, there is. 

    There's ______ on the table.

3. Are there ______ cars in front of the building?

    No, there aren't.

4. There isn't ______ chocolate on the table.

5. Is there ______ soap on the dressing table?

双向扩散试验中当抗原含量相对多时

A．沉淀线靠近抗原孔

B．沉淀线靠近抗体孔

C．出现多条沉淀线

D．不出现沉淀线

E．沉淀线变宽