单选题
Heat is transferred from the tropics to the poles
A、
in the surface currents.
B、
in the atmosphere,
C、
in the deep currents.
D、
along the seabed.
【正确答案】
A
【答案解析】
[解析]文中第六段提到“Some of the heat．．．north or south towards the poles，．．．”。故应选A。
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