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在室温下,有两只烧杯,其中①号杯盛有1kgH2O(l)溶解0.01mol蔗糖的溶液,②号杯中盛有1kgH2O(l)溶解0.01mol食盐的溶液,将两只烧杯按同样的速度冷却降温,则
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含有非挥发性溶质B的水溶液,在101.325Pa下,270.15K时开始析出冰,已知水的Kf =1.86K×kg×mol-1,Kb=0.52K×kg×mol-1,该溶液的正常沸点是:
一个工作薄包含多个工作表，默认状态下有( )个工作表，分别为Sheet1、Sheet2、Sheet3。
Directions: In this section, there are six sentences. You’re required to read the sentences carefully and match the word in bold in each sentence with given similar words below. Please write down the exact word or phrase.We often think of drawing as something as that takes inborn talent.Professor D. B. Dowd argues that we have misfiled the significance of drawing because we see it as a professional skill instead of a personal capacity.Some believe that doodling during a boring lecture can help students pay attention.Both absent-minded doodling and copying from life have been shown to positively affect your memory and visual perception,so complain loudly the next time your school board slashes the art department’s budget.Researchers, teachers, and artists are starting to see how drawing can positively impact a wide variety of skills and disciplines.They can help to alleviate traffic jams.1. affect ___________________2.improve concentration____________3. cut_______________4. ease_________________5. misclassify______________6. gift___________________
Identifying Topic Sentences (10%) (2%*5)Directions:In this section, there is a passage with some sentences having been removed. Choose the most suitable sentence from the list A-E to fit into each of the numbered blank.Evaluating Sources (来源) of health InformationDeveloping the ability to evaluate reasonably and independently about the health problems will serve you well throughout your life.1.A key first step in bettering your evaluation ability is to look carefully at your sources of healthy information. Reasonable evaluation includes knowing where and how to find relevant information, how to separate fact from opinions, how to recognize poor reasoning, and how to analyze information and the reliability of sources. The following suggestions can help you sort through the health information you receive from common sources.2.Media reports often simplify the results of medical research. Find out for yourself what a study really reported, and determine whether it was based on good science. Think about the type of study. And examine the findings of the original research.3.Some studies will find that a behavior “contributes to” or is “associated with” an outcome; this does not mean that a certain course must lead to a certain result. Be aware that information may also be incorrectly explained by an author’s point of view. Carefully read or listen to information in order to fully understand it and stay away from misleading information.4.If a report seems too good to be true, probably it is. Be especially careful of information contained in advertisements. The goal of an ad is to sell you something. Evaluate “scientific” statements carefully, and be aware of quackery(江湖骗术).5.Friends and family members can be a great source of ideas and inspiration, but each of us needs to find a healthy lifestyle that works for us.
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