在能源基础科学和前沿技术领域加强原始创新,可以()。
A.为未来发展奠定坚实的基础
B.创造更大的经济效益
C.快速提升我国能源科技创新能力
D.完善能源科技成果转化
参考答案:A
--- Jack fell off the ladder yesterday, but he is all right now?
---What a lucky dog! He _________ himself badly.
A.should injure
B.might injure
C.should have injured
D.could have injured
河流的稀释能力主要取决于河流的扩散能力。