下列句子均有一处错误（或多一词；或缺一词；或错一词），请找出并加以改正。

Water is actually quite simple, but the way how the water molecule is formed gives water its unique properties.

完成B句，使其与A句意思相同或相近。（每空一词）

A.If a substance has a higher density, say 5 000 kg/m³,it will not float on water.

B.If a substance has a higher density, ______ ______,5 000 kg/m³,it will not float on water.

完成B句，使其与A句意思相同或相近。（每空一词）

A.Even though the pure water is something that gives seawater its main properties, the salinity of seawater affects both its weight and freezing point.

B.Even though the pure water is ______ gives seawater its main properties, the salinity of seawater has ______ ______ both its weight and freezing point.

完成B句，使其与A句意思相同或相近。（每空一词）

A.Water is different from almost all other substances on earth because of its chemical structure.

B.The chemical structure of water ______ ______ ______ from almost all other substances on earth.

完成B句，使其与A句意思相同或相近。（每空一词）

A.What makes the ocean such a great place to live?

B.What ______ ______ ______ makes the ocean such a great place to live?

完成B句，使其与A句意思相同或相近。（每空一词）

A. There’re about 5 million species in the ocean and we have yet to learn much about them.

B.There’re about 5 million species in the ocean, about ______ ______ ______ much waiting for us to learn.

介词、副词填空

The squid lives ______ the dark ______ a great depth ______ the bottom of the ocean.

介词、副词填空

The Yellow River winds its way ______ west ______ east and at last it flows ______ the sea.

介词、副词填空

Most ______ the Chinese people feed ______ rice.

介词、副词填空

The professor talked ______ two hours ______ stopping ______ a time.