【判断题】大多数植物组织培养的温度要求在25±2°C
【单选题】躯干、四肢皮肤痛、温觉传导通路的第二级神经纤维交叉于
【单选题】If the market does not allocate resources perfectly, the government can
【单选题】________that the government can clear up official corruption,we are________about the future of our country.
D.
Convincing;pessimistic