仲裁协议对仲裁事项没有约定或约定不明确的,当事人可以补充协议;达不成补充协议的,仲裁协议无效。 ( )
参考答案:对
— There used to be a lot of fish in the lake many years ago.
— Yes, but there are very _______ now because of the pollution.
A.few
B.fewer
C.little
D.less
泡沫渣形成的主要原因就是炉渣温度高。()