内容正文:
课时分层作业(一)
Ⅰ.单词拼写
1.There are no more continents(大陆) and no more moons to search for, little left to discover.
2.The old man left her a few million (百万)when he died.
3.This region is the home of many species (物种)of wild flowers.
4.This area of France has a pleasing climate (气候)in August.
5.Hundreds of tree species are facing extinction(绝种).
6.He may say no,but there's no harm(伤害)in asking.
7.The cost of living(生活) has risen sharply.
8.Her nervousness quickly disappeared(消失) once she was on stage.
9.The development of the food industry depends on that of agriculture(农业).
10.The impact(撞击)of the blow knocked Jack off balance.
Ⅱ.阅读理解
A
As climate change affects the planet,the world is turning to seaweed(海草) as a possible settlement.Seaweed can play a huge role in fighting climate change.It is used to create natural fuel and renewable plastics.It helps improve oceanic ecosystems.
People think of forests as the best defense(防护) against climate change.But some researchers say seaweed is a better settlement.Unlike trees,seaweed doesn't need fertilizers or fresh water.It grows faster than trees do.And it doesn't require any land.Most importantly,it absorbs carbon from the environment.
Seaweed could also become a key global food source.Many worry about the environmental influence of eating meat.Could seaweed farms provide enough protein for the world? Carlos Duarte,a professor of oceanic ecology thinks so.“When you look at how we are going to feed the world population by 2050,in a way that doesn't harm the environment,there is only one pathway,” he says.“Seaweed farming.”
In the past decade or so,global seaweed production has doubled.In British Columbia,seaweed farming is becoming popular.For thousands of years,First Nations people,the native people of Canada,have farmed on land and in the ocean.Seaweed farming helps them create economies of their own that agree with their traditions.Their role has always been to connect with the land and repair it.
Seaweed might fight clim