二、七选五阅读填空(共5小题;每小题2分,满分10分)

　　The scientific method is a process for experimentation that is used to explore observations and answer questions.　1　 Here are steps of the scientific method. 

　　Ask a question.The scientific method starts when you ask a question about something that you observe:How,What,When,Who,Which,Why,or Where?And,in order for the scientific method to answer the question it must be about something that you can measure,preferably with a number.

　　2　 Rather than starting from scratch in putting together a plan for answering your question,you need to use library and Internet research to help you find the best way to do things and make sure that you don’t repeat mistakes from the past. 

　　Construct a hypothesis.　3　 You must state your hypothesis(假设)in a way that you can easily measure,and of course,your hypothesis should be constructed in a way to help you answer your original question. 

　　Test your hypothesis by doing an experiment.Your experiment tests whether your hypothesis is supported or not.It is important for your experiment to be a fair test.You conduct a fair test by making sure that you change only one factor at a time while keeping all other conditions the same.　4　  

　　Analyze your data and draw a conclusion.Once your experiment is complete,you collect your measurements and analyze them to see if they support your hypothesis or not.　5　 This starts the entire process of the scientific method over again.Even if your hypothesis is supported,you may want to test it again in a new way. 

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