全国各地中考真题:河南省开封市2019年中考生物真题试题(含解析)
2019年河南省开封市中考生物试卷一、选择题(本大题共20小题,共20.0分)1.一般情况下,生物不会因个体的死亡而导致一个物种的灭绝。这是因为生物( )A.能对外界刺激作出反应B.是由细胞构成的C.能适应环境D.能生长和繁殖2.俗话说:“大树底下好乘凉”。下列现象与此生物与环境的关系相似的是( )A.企鹅的皮下脂肪很厚B.沙漠地区栽种的植物能防风固沙C.温带的野兔随季节换毛D.莲藕的茎和叶都是中空的3.铅是一种在生物体内难以分解和排出的物质。在一个受铅污染的生态系统中,发现有甲、乙、丙、丁四种生物之间存在吃与被吃的关系,经检测它们体内残留的铅含量情况如表,那么四种生物之间最可能的食物链构成...
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