According to the passage, which description of the construction of massive dams and irrigation projects is incorrect？
A. They can divert the rivers.
B. They can fix more problems than they create.
C. They are built to irrigate farmland.
D. They may have brought on ecological crisis.
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A. There's a paper by the door. B. The paper must have been blown
A. There's a paper by the door.
B. The paper must have been blown away.
C. The man should look around for it under the desk.
D. The man can buy another one at the corner.
A. He is good at drawing pictures. B. He likes paintings very much.
A. He is good at drawing pictures.
B. He likes paintings very much.
C. He likes visiting the art museum very much.
D. He thinks the art museum is a very quiet place.
利用电流正反馈能够得到近似的最大电流恒流过程。( )
中国特色社会主义是实践、理论、制度的紧密结合。中国特色社会主义道路、理论体系、制度，三者各有作用又统一于中国特色社会主义伟大实践，这是党领导人民在建设社会主义长期实践中形成的最鲜明特色。其中，中国特色社会主义理论体系是中国特色社会主义的（）
A. 实现途径
B. 行动指南
C. 根本保障
D. 坚实基础
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