第二章测试1.There are records about marine drugs in the Compendium of Materia Medica（ ）
A:错 B:对
答案:B
2.Trace elements in seawater belong to one of the chemical characteristics of seawater（ ）
A:对 B:错 3.Seawater cannot be used directly（ ）
A:对 B:错 4.Combustible ice is also called natural gas water compound（ ）
A:错 B:对 5.Coastal zone is the transition zone from ocean to land（ ）
A:对 B:错
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