选项 A“subject”通常指学科、主题或实验对象(人);选项 B“object”指物体;选项 C“specimen”指标本。“sample”在科学实验中通常指被测试的样本,与题干描述相符。subject 在这个语境中不合适;object 一般指普通的物体;specimen 更多指用于分析的标本,而不是被测试的物质。
make the experiment more fun C. ensure the results are reliable D. confuse the scientist 相关知识点: 试题来源: 解析 C。解析:在科学实验中,重复是重要的,以确保结果是可靠的。选项 A“waste time”错误。选项 B“make the experiment more fun”不是主要目的。选项 D“confuse the scientist”显然不对...
A. personal opinions. B. guesses. C. experimental results. D. what others say. 相关知识点: 试题来源: 解析 C。科学实验的结论应该基于实验结果。选项 A 个人观点、选项 B 猜测和选项 D 别人的说法都不是得出科学结论的可靠依据。反馈 收藏
In a scientific experiment, after identifying a problem, what should be done next? A. Draw a conclusion B. Make an observation C. Form a hypothesis D. Analyze the data 相关知识点: 试题来源: 解析 C。解析:在识别问题之后,下一步应该是形成假设。选项 A 得出结论是在实验后期;选项 B 进行观察...
conducting the experiment C. formulating a conclusion D. revising the hypothesis 相关知识点: 试题来源: 解析 B。解析:在进行实验的步骤中涉及进行观察。选项 A“准备材料”不涉及观察。选项 C“得出结论”是实验结束后的步骤。选项 D“修改假设”在分析结果后可能进行。反馈 收藏 ...
A. dependent variable B. independent variable C. control variable D. random variable 相关知识点: 试题来源: 解析 B。本题考查科学实验中的变量概念。独立变量(independent variable)是由研究者操纵的变量。A 选项“dependent variable”是因变量,是随独立变量变化而变化的。C 选项“control variable”是控制变量...
A. test the hypothesis B. provide a comparison C. confirm the results D. introduce new variables 相关知识点: 试题来源: 解析 B,The control group in a scientific experiment serves as a standard for comparison to assess the effect of the variables being tested. Option A is the overall aim ...
In a scientific experiment, the probability of event A happening is 0.4. If the experiment is repeated 10 times, how many times can we expect event A to occur approximately? A. 2 B. 4 C. 6 D. 8 相关知识点: 试题来源: 解析 B。本题考查概率的基本概念和应用。概率为 0.4,重复 10 次...
To succeed in a scientific experiment, ( )。 A. one needs being patient person B. patience is to need C. one needs to be patient D. patience is what needed 相关知识点: 试题来源: 解析 [解析]C。题干中是动词不定式作目的状语,因此填空处应由“人”作主语,因此c为正确答案。
1To sncceed in a scientific experiment,___A.one needs being patient person B.patience is to need C.one needs to be patient D.patience is what needed 2To succeed in a scientific experiment, .A.one needs being patient personB.patience is to needC.one needs to be patientD.patience...