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【单选题】
According to the passage, the numerical value of the concentration level of a substance is only useful if ______.
A.
it is in a localized area
B.
the naturally occurring level is also known
C.
it can be calculated quickly
D.
the other substances in the area are known
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【判断题】M-commerce is regarded as next-generation e-commerce.
A.
正确
B.
错误
【简答题】阅读材料,回答下列问题。 材料一: 我国中长期粮食消费预测 材料二: 1999-2003年我国耕地变化情况分析 (1)我国粮食中长期消费的趋势是________________________、________________________。其主要原因是_________________________、______________________、_______________________...
【单选题】Web sites specifically designed for m-commerce are called
A.
wireless portals.
B.
online syndicators.
C.
private exchanges.
D.
B2C e-commerce sites.
【简答题】is now considered the center of industry, transportation, commerce and finance in the m10:is now considered the center of industry, transportation, commerce and finance in the mid-west area.
【简答题】is now considered the center of industry,transportation,commerce and finance in the mid—west area'?__________
【单选题】Maybe MaYun hasn’t expected that Alibaba can() its present position in e-commerce within only 15 years.
A.
deliver
B.
attain
C.
attach
D.
detain
【单选题】中度左心室肥大心尖搏动的位置是:
A.
向左下移位
B.
向右移位
C.
向右上移位
D.
向左上移位
E.
向左移位
【简答题】阅读下列材料,分析回答有关问题。 材料一: 从1993年开始,我国成为石油进口国。下图为2003年我国石油进口结构图。 材料二: 每单位国内生产总值(GDP)的一次能源消费量:以美国为1,则我国为2.3,日本为0.47,印度为1.3。 (1)我国进口石油风险很大,对我国国民经济的发展构成了潜在威胁,原因是什么? ___________________________________________...
【判断题】Listen and answer: The speaker likes playing table tennis and enjoys cooking at home.
A.
正确
B.
错误
【简答题】分析“专家”对以下问题作出的回答:
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