8 A student carries out an experiment to determine the refractive index u for light travelling from air into plastic. She shines a ray of light through a semicircular block of the plastic as shown.A The student measures different angles of incidence i and corresponding angles of refraction r....
A student recorded the time of an experiment as 30 minutes, but it was actually 2 hours. How to handle this mistake? A. Change 30 minutes to 2 hours directly. B. Check the clock used and recalculate the time. C. Leave the data as it is. D. Use the average of 30 minutes and 2...
15.The student completed this experiment to make come trueProfessor Joseph had said.A. thatB. whatC. whenD. where 相关知识点: 试题来源: 解析 15.B考查名词性从句。【全能解析】句意为:这个学生完成了这个试验,使 J_0seph 教授所说的话变成了现实。分析句子结构可知,空格处引导宾语从句,且在从句中...
The student completed this experiment to make come trueProfessor Joseph had said.A. thatB. whatC. whenD. where 相关知识点: 试题来源: 解析 B 考查名词性从句。句意:学生们完成了这个实验,实现了Joseph教授所说的东西。由句意可知,该从句是宾语从句,作said的宾语,因此使用连接代词 what。故选 B。
【题目】阅读理解I carried out my first realexperiment in the 9th grade.My school was a dream placefor someone who dreamed ofbecoming a scientist-we hadalmost everything that one needed to do experiments inthe lab.The experiment was designed by me and anotherstudent called Aisha, who to this...
7 A student performed an experiment to see whether chlorophyll is necessary for photosynthesis.What is a suitable plant for this experiment? B A a plant in a closed jar with no access to carbon dioxide B a plant that has white patches on its leaves C a plant with black paper pinned to ...
What will happen to the bulb? A. It will explode. B. It will break. C. It will light up. D. It will turn black. 相关知识点: 试题来源: 解析 C。电池连接灯泡,灯泡会亮。A 选项是爆炸,一般不会;B 选项是破碎,不合理;D 选项是变黑,不符合实际情况。反馈 收藏 ...
In an experiment, a student puts a block of ice in a warm room. What will happen to the ice? A. It will get colder. B. It will stay solid. C. It will melt. D. It will disappear. 相关知识点: 试题来源: 解析 C。冰在温暖的房间会融化。A 选项是冰会更冷,不符合常理;B 选项是...
” is that scientists use the so-called scientific method. If you’ve got a high school science textbook lying around, you’ll probably find that answer in it. But what is typically thought to be the scientific method—develop a hypothesis ( 假设 ), then design an experiment to test it...
83.4meters,”saidWangZi,aresearcherandPhDstudentattheInstituteofBotany. ZayulcountyislocatedinthemountainvalleyareabetweentheHimalayasandtheHengduan Mountains,withanaverageheightof2,800meters.Itsclimateisunique,complexanddiverse, withabundantannualrainfall,amildclimateandappropriatesunshine.TheNujiangRiverinZayul cou...