您现在的位置: Language Tips> BBC> Weekly Quiz
BBC UKChina

South Africa 南非

You said:
 
 
2 Did you know that South Africa has the largest hydro-electric power tunnel system in the world? But how is 'hydro' power generated?
 
the sun
water
wind
coal and gas

   上一页 1 2 3 4 5 6 7 下一页