单项选择题

与硫酸铜生成草绿色沉淀的是 A.

磺胺甲恶唑 B.

磺胺嘧啶 C.

甲氧苄啶 D.

磺胺异恶唑 E.

磺胺醋酰钠

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The HPAE (High Performance Asian Economies) countries ___________.
A、have all consistently supported a complete and wholly free trade policies.
B、have all consistently maintained import-substitution policies.
C、have all consistently maintained non-biased efficient free capital markets.
D、have all partly maintained openness to international trade.

答案： D

单项选择题

广州是中国的千年商都。( )

A．对
B．错