世界最大水电站——白鹤滩水电站
世界最大水电站——白鹤滩水电站


Baihetan is the world’s largest hydropower plant (水电站). A hydropower plant uses water to make electricity (电). The dam (水坝) opened on June 28th, 2021. It is 289 meters high.

The dam is on the Yangtze River in China. More dams are on this river. They make a lot of electricity for eastern and central China. Many people and factories are there. They need lots of electricity. Baihetan can make 150 kilowatt-hours (千瓦时) of electricity with one rotation (旋转). It is enough for one family for a month.

China wants to control the river during summer months. It rains a lot in summer. China makes a lot of emissions (排放), too. Hydropower plants make electricity without emissions.

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1.When did Baihetan began to make electricity?

A In April, 2021.

B In May, 2021.

C In June, 2021.

D In July, 2021.

解析:选C。C细节理解题。根据第一段The dam opened on June 28th, 2021.可知,白鹤滩水坝于2021年6月28日开启。故选C。

2.__________ needs lots of electricity.

A The east of China

B The south of China

C The west of China

D The north of China

解析:选A。A推理判断题。根据第二段They make a lot of electricity for eastern and central China.可知,这些水坝为中国东部和中部提供大量电力。故选A。

3.How much electricity may a family need a day?

A About 3 kilowatt-hours.

B About 5 kilowatt-hours.

C About 37.5 kilowatt-hours.

D About 150 kilowatt-hours.

解析:选B。B数字计算题。根据第二段Baihetan can make 150 kilowatt-hours of electricity with one rotation. It is enough for one family for a month.可知,白鹤滩(机组)转一圈可发电150千瓦时。这足够一个家庭使用一个月。由此说明一个家庭一天用电量约为150÷30=5千瓦时,故选B。

4.The dam probably has a lot of work to do __________.

A in winter

B in spring

C in summer

D in autumn

解析:选C。C推理判断题。根据第三段China wants to control the river during summer months. It rains a lot in summer.可知夏季雨水很多,中国想要在夏季控制长江。由此推断水坝在夏季可能有大量工作要做,故选C。

5.Which of the following is TRUE?

A China is short of electricity.

B China has controlled the rivers.

C Water power is enough in China.

D Hydropower plants make no emissions.

解析:选D。D细节理解题。根据最后一段Hydropower plants make electricity without emissions.可知,水电站零排放发电。故选D。