DNA的两条链是互补的,一条链决定了另一条链的序列。()。
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What is attached in the second e-mail?
A. The final report
B. A copy of Mr. Ericsson"s bank information
C. A reference letter from a bank
D. A list of research team members
人体中的微量元素不但维持正常生理功能,而且是人类心理健康的物质基础。这个说法对吗?()