古诗句“种豆南山下,草盛豆苗稀”反映的种间关系是( ) A.共生 B.寄生 C.捕食 D.竞争
Government officialsare______ people and they should____the people heart and soul. A. servants of; serve B.service for; serve C. servants of; serve for D.servants for; serve of
一定温度下,往纯水中加入少量下列物质。当物质溶于水(或与水反应)后,水的电离可能不受影响的是 A.盐 B.酸 C.碱 D.氧化物
在参观《复兴之路》时,回顾了中华民族的昨天,总结了中华民族的今天,展望了中华民族的明天。指出了实现中华民族伟大复兴,就是中华民族近代
下列说法正确的有( ) A. 对原子光谱的研究开辟了深入探索原子结构的道路 B.若使放射性物质的温度升高,其半衰期将减小 C.在α、β、γ这三种
Lily is _______ her book, but she can’t ______ it. A. looking for; find B. finding; look for C. looking for; look for
People often say that the Englishman’s home is his castle. They mean that the home is very important and __16__. Most people in Britain live in houses __17__ flats, and many people own their
(12分)工业化是实现中华民族伟大复兴的必由之路。阅读以下材料,回答问题: 材料一 新中国成立后,经过三年努叻,国民经济得到了恢复和初步