A.二蒽酮苷类 B.大黄素型 C.苯醌类 D.茜草素型 E.菲醌类
蒽醌的羟基分布在一侧苯环上称为
参考答案:D
— Many people have been out of work in China.
— And _________that the government is always takingmeasures to increase the number of
employment. [ ]
A.in spite of
B. because of
C. thanks to
D. in addition to
现阶段我国实施的是()战略。
A、可持续发展
B、促进人类健康
C、保护生态环境
D、安全生产