A. To be ignored. B. To show the effect of the independent variable. C. To prove the hypothesis wrong. D. To make the E. xperiment more complicated. 相关知识点: 试题来源: 解析 B。解析:对照组的目的是显示自变量的影响。选项 A 不对,对照组不是被忽略的;选项 C 错误,对照组不是为了证明...
A. To prove the hypothesis B. To compare with the experimental group C. To make the experiment more complicated D. To increase the sample size 相关知识点: 试题来源: 解析 B。对照组在生物实验中的目的是与实验组进行比较。反馈 收藏
A. To compare with the experimental group B. To make the experiment more complicated C. To waste time D. To make the E. xperiment more interesting 相关知识点: 试题来源: 解析 A。在科学实验中,对照组的作用是与实验组进行比较。B 选项“使实验更复杂”错误;C 选项“浪费时间”错误;D 选项“使...
In an experiment, if the independent variable is changed, what might also change? A. Dependent variable B. Control variable C. Constant variable 相关知识点: 试题来源: 解析 A。理解科学实验中的变量关系,自变量改变可能导致因变量改变,答案是 A。
A. Dependent variable. B. Independent variable. C. Control variable. D. Unknown variable. 相关知识点: 试题来源: 解析 B。在实验中,如果改变温度,温度是自变量。因为温度是由实验者改变的。选项 A 因变量是随着自变量变化而变化的;选项 C 控制变量是要保持不变的;选项 D 未知变量不符合题意。反馈...
Negative Control Group | Definition & Examples from Chapter 36 / Lesson 14 262K Understand what positive and negative controls are in an experiment. Learn the purpose of a negative control group, and study example negative control groups. Related...
What control "experiment" would you do to examine the effects of repair in the presence of a mutagen? When conducting an experiment, explain how a control sample and an experimental sample differ from each other. In Biology, what is a control...
Therehas been a growing concernin Chinaaboutgaming addiction among children. Governmentreportsin2018foundthataboutoneintenChinesechildrenwereaddictedtothe Internet.Thenewrulesarepartofanefforttopreventyoungpeoplefromspendingtoomuchtime onunhealthyentertainment.Thatincludeswhatofficialscallthe“irrationalfanculture”. ...
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11.Whatisthetextmainlyabout? A.Achildhooddream. B.Anunforgettableexperience. C.Sailingaroundtheworld. D.MeetinganimalsinAntarctica. 模拟强化 A Whichcountrycanyoutraveltoin2020that willallow youtogoforlonger,enjoyahigher standard,andsave more money? Thefollowing destinationsofferaccommodation,transportation, ...