1 . As climate change affects the planet, the world is turning to seaweed (海草)as a possible settlement and 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 fanning."
In the past decade or so, global seaweed production has doubled. In British Columbia, seaweed farming 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 climate change but it isn't without risks. If it isn't harvested, it can go bad and give off carbon back into the air or water. Growing too much of it could also affect the amount of light that reaches species living deeper in the water. That would be dangerous for underwater ecosystems. So some scientists think seaweed can be a part of the settlement to climate change, but it's not a perfect one on its own.
1. What is an advantage of seaweed in fighting climate change compared with trees?| A．Growing taller. | B．Using fewer resources. |
| C．Living longer. | D．Absorbing more carbon. |
| A．Unclear. | B．Doubtful. | C．Uncaring. | D．Supportive. |
| A．First Nations people have changed their traditions. |
| B．Seaweed farming has its origin in British Columbia. |
| C．Seaweed farming isn't risk-free for the environment. |
| D．Global seaweed production has been less in recent years. |
| A．Seaweed Farming for Food | B．Seaweed Production in the World |
| C．Seaweed Creating Natural Fuel | D．Seaweed in Environmental Protection |
2 . Ecotourism has become increasingly popular in recent years.Travelers visit natural environments funding conservation efforts or promoting local economies.In many cases, ecotourism involves close interaction with wildlife.
Now, scientists have analyzed more than 100 research studies on how ecotourism affects wild animals.They find the presence of humans changes the way animals behave, and those changes may put them at risk.Therefore, they have concluded that such trips can be harmful to the animals.
When animals interact in seemingly kind ways with humans, they may let down their guard.As animals learn to relax in the presence of humans, they may become bolder in other situations.If this transfers to their interactions with predators (捕食者), they are more likely to be injured or killed.
The presence of humans can also discourage natural predators.It creates a kind of safe place for smaller animals that may make them bolder.For example, in Grand Teton National Park, elk and pronghorns in areas with more tourists are less watchful and spend more time eating.
Interacting with people can cause great changes in the characteristics of various species over time.“If animals become accustomed to tourists, we might create unintended consequences — affecting the behavior or population of a species and influencing the species’ function in its community,” the researchers write.
Ecotourism has effects similar to those of animal domestication (驯养) and urbanization.Research has shown that domesticated silver foxes become more obedient and less fearful.Fox squirrels and birds that live in urbanized areas are slower to flee from danger.The phenomena result from evolutionary changes, but also from regular interactions with humans.
Scientists hope the new analysis will encourage more research into the interactions between people and wildlife.It is essential to develop further understanding of how various species in various situations respond to human interaction and under what conditions human exposure may place them at risk.
1. We can learn from the passage that ___________.| A．ecotourism causes damage to the natural homes of wildlife |
| B．it is easy for eco-tourists to build up trust with wild animals |
| C．the effects brought by ecotourism may be harmful to the animals |
| D．wildlife interactions with humans strengthen their function in community |
| A．shyer | B．braver | C．wiser | D．swifter |
| A．wild animals become more relaxed due to evolution |
| B．animals’ reactions to humans vary from species to species |
| C．smaller animals tend to be in harmony with natural predators |
| D．the presence of humans reduces their awareness of potential danger |
| A．Ecotourism Can Put Wild Animals at Risk |
| B．Ecotourism Has Become A Popular Trend |
| C．Wildlife’s Reactions to Human Activities |
| D．Latest Research Findings on Ecotourism |
1. 野生动植物的现状；
2. 分析造成许多野生动植物濒临灭绝的原因；
3. 提出几条保护野生动植物的具体措施。
注意：1. 词数100左右；
2. 不可遗漏要点，可适当增加细节；
3. 书写要干净、工整；
4. 开头和结尾已给出，不计入总词数。
Dear Sir or Madam,I’m writing to give some suggestions to protect the wildlife living in and around our city.
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours sincerely,
Li Hua
