单项选择题

A、
B、
C、
D、

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单项选择题

作为一名销售人员（）决定业绩 A.
专业知识 B.
人际交往 C.
心态 D.
自信

单项选择题

A、Digging deep into the earth to obtain fossil fuel.
B、Moving the energy system from fossil fuels to renewables and other low carbon technologies.
C、Chemically changing the composition of fossil fuels.
D、Switching from electricity to fossil fuels.