新西兰英语 540 Dirty rivers
英语课
Some rivers and beaches in New Zealand are not clean enough. A new report to the Minister of Conservation, Kate Wilkinson, says that we need to do more to protect rivers.
Some of the problems with rivers are because too much water is taken out of the river for hydro-electricity or for irrigation for farms. This is especially a problem in Canterbury which has a low rainfall and needs water to irrigate 1 so that the grass grows for dairy farming.
Another problem is that rivers become dirty when cows are allowed to walk through small streams. Streams flow into rivers and rivers flow into the sea. When cows pollute the water, sometimes the rivers and beaches are not safe for swimming.
Another problem is the use of fertilizers by farmers. Rain washes these into the rivers.
New Zealanders believe we have a clean, green country. Mostly this is true but we can still do better.
Vocabulary
hydro- water
irrigate – add water to the land
fertilizer – plant food
Questions
What can farmers do to stop rivers becoming polluted?
When too much water is taken out of a river, what other plants and animals are affected 2?
What can the government do to protect our rivers?
vt.灌溉，修水利，冲洗伤口，使潮湿
- The farmer dug several trenches to irrigate the rice fields.这个农民挖了好几条沟以灌溉稻田。
- They have built canals to irrigate the desert.他们建造成水渠以灌溉沙漠。