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【单选题】
地面机械触土部件与土壤接触时面临的问题是()A.
氧化
B.
粘附
C.
腐蚀
D.
磨损
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【简答题】Generally speaking, people want to keep a wild animal as a pet for one of many reasons: they want to impress other people by owning an unusual, uncommon animal as a pet. In no case is the happiness of...
【简答题】That Upper class people generally have more educational opportunities, greater financial security, and better jobs than people from lower social classes, but that doesn’t mean they’re more skilled at ...
【单选题】Which statement is true according to the passage?
A.
People generally understand about 50 percent of what they hear.
B.
We often spend much more time in judging the speaker than in trying to understand what he or she is saying.
C.
It helps us to understand if we think faster than most people speak.
D.
There are four steps in listening: hearing, interpreting, evaluating and responding.
【简答题】探究0.1mg/L的萘乙酸（生长素类似物之一）对种子萌发的影响，某生物兴趣小组要进行实验研究。若你是其中一员，请你根据下面提供的实验材料和用具完成实验方案的设计，并预测可能的实验结果。
材料用具：干燥的萝卜种子若干，小烧杯2个，垫有滤纸的培养皿2个，0.1mg/L的萘乙酸溶液，蒸馏水，量筒。2）方法步骤：①：（）②：在两个小烧杯中各放入若干粒干燥的萝卜种子，浸泡24h。③：取2个垫有滤纸的培养皿，...
【单选题】Generally speaking, people
A.
feel poor if they have less than many others.
B.
feel rich if they have more than many others.
C.
tend to equate being happy with their feeling relatively rich.
D.
tend to expect more if they are richer than their neighbors.
【简答题】ICSI指的是
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