在研究“响尾蛇如何跟踪它放走的猎物”的实验中，科学家提出了响尾蛇是根据自己毒液的气味来追踪受伤的猎物的看法。这应属于实验探究中（）的步骤。A．提出问题B．作出假设C．收集相-七年级生物

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• You look very tired, why not ______________ a rest?[ ]A. to stop to haveB. stop to haveC. stop havin
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• 下列关于假设的叙述中，不正确的是A．假设是对问题的一种可能的解释B．假设是一种无端的猜测C．假设要以事实或生活经验为依据D．假设与结果可以一致，也可以不一致-七年级生物
• 观察是科学探究的一种基本方法。下列各项活动中属于观察的是A．上网搜索资料B．用直尺测量肾蕨的高度C．进行人口普查D．用放大镜看蚂蚁的结构-七年级生物
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• The man put on his glasses __________ see clearly.[ ]A. thatB. so that toC. in order thatD. in order
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• 科学探究是学习和研究生物学的重要方法。下列关于“尝试探究水温对金鱼呼吸次数影响”实验的相关叙述中，正确的是A．实验过程中不需要用温度计测量水温的变化B．实验组和对照组除-八年级生物
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