单项选择题

______chemical group is not explained in detail in this report

A．Shin-Etsu
B．Mitsubishi Kasei
C．Mitsui petrochemical
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单项选择题
31（）

A．field
B．counter
C．market
D．fair
单项选择题
Why is the domain name game become more and more difficult for late comers
A．Because later comers is not creative enough to invent special domain
B．Because many common names have already been taken
C．Because the resell market rise extremely quickly.
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