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Directions: Complete the following dialogues, using the words and phrases in brackets. Make changes or additions where necessary.A: Why will oil cease to be the No. 1 problem of our time?B: The dawn of a new energy era is just _________. Oil prices are _______because solar power is becoming cheaper. Besides, improvements in energy _______, while helping to create a clean ________, are reducing waste and the demand for oil. (go down, environment, around the corner, efficiency)
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Directions: Complete the following dialogues, using the words and phrases in brackets. Make changes or additions where necessary.A: Why isn't it easy to solve the water problem?B: Because water is far ________than energy. No other ___________can _______water, so it is impossible to find an __________it. Besides, water demand is rising, but water supply is fluctuating as a result of climate change. (resource, complicated, alternative, replace)
Directions: Complete the following dialogues, using the words and phrases in brackets. Make changes or additions where necessary.A: Why is it important for us to conserve water?B: Water is going to be the most contentious ______of the 21st century. It will trigger geopolitical ______. That's why water ________is not only _________our economy but also a task of _______importance. (conservation, in the interest of, conflict, strategic, resource)
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