全国各地中考真题:甘肃省平凉市2017年中考生物真题试题(含答案)
甘肃省平凉市2017年中考生物真题试题一、单项选择题(本大题包括10道题目,每小题2分,20分)1.小王同学为了探究“温度对扦插枝条生根的影响”,设计了以下几组对照实验,其中最为合理的一项是()A.低温、室温B.高温、室温C.高温、低温D.高温、室温、低温【答案】D2.制作洋葱鳞片叶内表皮细胞和人口腔上皮细胞的临时装片时,在载玻片上滴加的液体分别是( )A.清水、碘液B.生理盐水、清水C.清水、生理盐水D.碘液、生理盐水【答案】C3.平凉是农业部划定的全国苹果生产最佳适宜区,红富士系列苹果个大、色艳、硬度大、糖分高、耐贮存,深受消费者青睐。苹果中的种子是由花的什么结构发育而成的( )A.子...
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