The next decade may prove to be a ______ turning point in Chinese history.
A. deficient
B. desperate
C. devastating
D. decisive
生地黄药材进行薄层色谱法试验的对照品是
A. 毛蕊花糖苷
B. 益母草苷
C. 二氢梓醇
D. 地黄多糖 RPS-b
Taking an engineer or scientist involved in product design and development is always _____________.
A. accelerate
B. advantageous
C. overtaken
D. displace
“禹传子”“家天下”说明我国古代的哪一制度开始遭到完全破坏
A. 分封制
B. 世袭制
C. 禅让制
D. 宗法制