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【单选题】
流行病学研究方法的核心特征是A.
群体的特征
B.
发展的特征
C.
对比的特征
D.
概率论与数理统计学的特征
E.
社会心理的特征
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反馈参考答案：
举一反三
【简答题】高速钢车刀耐热性较差,不宜 ( ) 车削。 A 、低速 B 、高速 C 、变速 D 、正反车
【单选题】According to a UN report，one third of the world population have no _________ to clean drinking water and health care.
A.
means
B.
approach
C.
channel
D.
access
【单选题】According to a UN report, one third of the world population have no _________ to clean drinking water and health care.
A.
means
B.
approaches
C.
ways
D.
access
【单选题】According to the passage, ______ creates an Expressionist effect.
A.
Fleurs Dans un Vase Vert
B.
La Femme aux Bras Croisés
C.
Races in the Bois de Boulogne
D.
Boats on the Strand
【单选题】According to the UN's prediction, the growth population from now to 2050 is nearly all in ______.
A.
western countries
B.
African countries
C.
developed countries
D.
developing countries
【单选题】According to a UN report, a third of the world population have no ______ to clean drinking water and health care．
A.
means
B.
approach
C.
channel
D.
access
【单选题】According to the UN estimates, most countries in the world will experience negative population growth in 2040.
A.
Y
B.
N
C.
NG
【单选题】According to the UN report, the least developed country is______.
A.
Ethiopia
B.
Mali
C.
Sierra Leon
D.
Central African Republic
【单选题】According to the UN report, developed economies in 2012 will______.
A.
make a quick recovery
B.
fall back sharply into recession
C.
be up in the air
D.
be in danger of downturn
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