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【单选题】
根据恩格尔定律，随着家庭收入的增加，家庭总支出中用来购买食物的支出比例将会（）A.
下降
B.
上升
C.
不变
D.
变为60%左右
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【简答题】In 2018 an official survey of 1m pupils found that ___1___ those aged between 12 and 14, 72% had myopia, up ___2___ 58% in 2010. (among, between, from, to)
【简答题】The Chinese government reckons that more than 450m people in China, or at least one in three, are short-sighted. Globally just over one in five are. The prevalence of myopia among Chinese schoolchildr...
【简答题】Among those aged _____ to _____ spending time ______ to _______ was selected as their top activity.
【简答题】How Texting and IMing Helps Introverted s? There is plenty of grumbling about how social media — texting in particular — may be harming children’s social and intellectual development. But a new st...
【简答题】影响沉淀纯度的主要因素是______和______。在晶型沉淀的沉淀过程中，若加入沉淀剂过快，除了造成沉淀剂局部过浓影响晶型外，还会发生______现象，使分析结果______。
【简答题】How Texting and IMing Helps Introverted s? There is plenty of grumbling about how social media — texting in particular — may be harming children’s social and intellectual development. But a new st...
【简答题】LTE小区平均（ ）反映了一定网络负荷和用户分布情况下的基站承载效率，是网络规划重要的容量评价指标。
【单选题】Higher rates of job accidents are found among workers aged fifteen to twenty-four and those aged fifty-five and older. More people in those two age groups are expected to enter the workforce. Accordin...
A.
30
B.
40
C.
50
D.
60
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