Rivers have been important to man ______. [br] Energy is obtained from rivers by

游客2024-07-24  14

问题 Rivers have been important to man ______. [br] Energy is obtained from rivers by ______.

选项 A、building bridges across them
B、building dams across them
C、driving generators into them
D、channelling them into homes and factories

答案 B

解析 本题问的是用何种方式才能从河水中得到能量?从第四段第二句“人们建立巨大的水坝,控制河水,灌溉庄稼,并且获得发动发电机的能量”可以找到答案。
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