单项选择题

A．Five.
B．Six.
C．Seven.
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单项选择题
A．Dyestuffs.B．Insecticides.C．Agrochemicals.
A．Dyestuffs.
B．Insecticides.
C．Agrochemicals.
单项选择题
A．Agrochemicals exports.B．Dyestuff and pigments.C．Insecticides and fertilizers.
A．Agrochemicals exports.
B．Dyestuff and pigments.
C．Insecticides and fertilizers.
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