▶ Your Answer :
The lecturer argues that the advantages of the hydropower facilities are not big. This contradicts the reading passage’s claim that there are many profits using hydropower plant and it will be employed more widely. First, the lecturer asserts that the hydropower has some limits. To be specific, by using this kind of generating system, evaporation of the river’s water will increase, affecting the precipitation of the rain. As a result of this, generating facility using the water will also have difficulties to run. This refutes the reading passage’s claim that water is the infinity energy source for the eletrocity. Next, the lecturer claims that the plant for the hydropower needs to be maintained. Because of this facilities, silt will be built up continuously on the bottom of the river, so the steady maintenance is necessary. If it would not be controlled to remove the soil, the facility could not work well. This casts doubt on the reading passage’s claim that water energy plant don’t need to be maintained for the operation. Finally, the lecturer maintains that dams for water energy have serious risks. If the dam would collapse and engulf the near site, it could result in a much critical danger to the animals and people who lived under the dam. This counters the reading passage’s claim that the hydroelectric dams can prevent from flooding.
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