As urban populations exported finished goods__ raw materials from neighboring populations, organized trade grew substantially（）
A. be dripped with
B. flared up
C. boiled down to
D. in exchange for
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Globalization has several facets, including___（）
A. the globalization of markets
B. the globalization of production
C. the globalization of manufacturing
D. the globalization of marketing
The main route of transmission of hepatitis B does not include（）
A. blood transmission
B. mother-to-child transmission
C. sexual transmission
D. gastrointestinal transmission
Characteristics of environmental endocrine disruptors（）
Adults are more sensitive than children
B. Widely distributed
C. Various forms of expression
D. Widely varieties
The main ways for environmental hormones to enter the human body are（）
A. Breath
B. Water
C. Mother-to-fetus transmission
Direct consumption through residues of agricultural products
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