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题型:阅读理解-阅读单选 难度:0.85 引用次数:487 题号:6971746

Our mother earth is going through a very tough situation and we, the entire human race, are destroying our environment or unconsciously without even realizing its consequences. Now we have to act very smartly and plan something to sustain what we still have, getting all necessary support from nature to lead healthy lives.

Gardening is always an excellent and environmentally friendly idea. If you can go for sustainable gardening, then it will be even more useful for all. Gardening is a favorite hobby for many. It is time to channelize your hobby towards a more meaningful motivation.

When we do gardening we need to use different ingredients(材料) to grow plants. Some of them are natural resources like water, soil, sunshine, and many things like this. Using these resources smartly is a part of sustainable gardening. Some simple techniques include: use less water and organic things to grow plants; try to store rainwater so that you can use them for gardening; try using less energy to drive devices; avoid using plastics in any form while gardening; reuse the leaves from your garden to fertilize them. These are the basic sustainable measures. To do so we need to have proper knowledge about gardening and its requirements so that we can use proper resources without wasting any of them.

In today’s busy life we don’t get much time to spend on our environment. Gardening gives us a chance to do so. We can also have some pesticide-free(无农药的) and fresh food if we grow them in our garden. This is the right time to do some good to protect our own environment and gardening is one of the easiest ways. Do you want to start gardening, but you’re not sure how? Click here: http://www. gardenhowto. com.

1. What does the underlined word “channelize” in Paragraph 2 refer to?
A.Cause.B.Transform.
C.Direct.D.Associate.
2. Which of the following belongs to a sustainable measure?
A.Using advanced electrical machines.
B.Avoiding fertilizers.
C.Watering plants with collected rainwater.
D.Clearing away the leaves.
3. What is the benefit of sustainable gardening?
A.It requires little water.B.It needs no fertilizer.
C.It breaks up plastics.D.It doesn't waste any resource.
4. Where is the passage probably taken from?
A.A newspaper.B.The Internet.
C.A guidebook.D.A science report.

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阅读理解-阅读单选(约310词) | 较易 (0.85)
文章大意:本文是说明文。文章主要讲的是《濒危野生动植物种国际贸易公约》(CITES)在保护地球物种上发挥着重要作用。

【推荐1】March 3 is World Wildlife Day, an opportunity to celebrate the wonderful diversity of plants and animals on earth. This day also marks the 50th anniversary of an international agreement between governments to ensure the trading of wild animals and plants—which is estimated to be worth billions of US dollars globally—doesn’t threaten species’ survival.

The voluntary deal, called the Convention on International Trade in Endangered Species of Wild Fauna and Flora(CITES), provides varying degrees of protection to more than 37,000 species globally. The text of the convention was agreed at a meeting on March 3,1973 and it came into force in 1975. It provides a framework for 184 participants to ensure sustain-able trading of wild species for products such as food, fur and medicines.

“Without CITES, we’d lack a vital mechanism to turn off the ever-flowing and sorrowful deal of species driven by market demand,” said Abigail Entwistle at conservation charity in a press release.

The mountain gorilla is one species benefiting from a total trade ban under CITES in partner ship with this charity. Since this began, the population size has risen fourfold to more than 1,000 individuals. The pygmy hippos(侏儒河马)are also protected by CITES. They are found in the forests and swamps of West Africa, with most living in Liberia. Recently, conservationists have confirmed that pygmy hippos have a wider distribution than previously thought.

Grenadines pink rhino iguana(犀牛鬣蜥)is a striking species, which is threatened by hunting, because it still lacks CITES protection. Since 2016, the charity has been working with local and international partners to protect this species. The important point is that it works. The charity says“a CITES listing would be the logical next step”to better protect its survival.

1. What is the purpose of the international agreement?
A.To earn profits for humans.
B.To ensure the diversity of wildlife.
C.To lower the trade barrier between countries.
D.To keep a balance between trade and species’ survival.
2. What does Abigail Entwistle say about CITES?
A.It reveals reasons for species declining.
B.It shows mechanism of conservation charity.
C.It contributes to species conservation on earth.
D.It drives people to research on species’ survival.
3. How does the author show the significance of CITES?
A.By providing examples.B.By making a summary.
C.By drawing comparisons.D.By explaining a concept.
4. What is the author’s attitude to the protection of Grenadines pink rhino iguana?
A.Optimistic.B.Objective.
C.Doubtful.D.Unclear.
2023-05-02更新 | 94次组卷
阅读理解-阅读单选(约360词) | 较易 (0.85)
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【推荐2】With climate change on track to destroy the world’s coral reefs, scientists race to create a new super-coral that can survive extreme temperatures.

A type of microscopic algae called Symbiodiniaceae lives within most coral’s tissues. The two organisms have been living dependently for hundreds of millions of years in a way that resembles the relationship between humans and trees. The algae consume coral’s waste products, and coral consumes nutrients that the algae photosynthesize. Coral also provides shelter for algae. But when exposed to too much heat or light, the algae release harmful chemicals, so the coral casts them out. Left without their main energy source, the coral will starve to death. This is also bad news for the algae. But natural evolution has provided a biological feedback loop that can help the two reunite.

One of the compounds that algae release when water becomes hot, called DMs, bubbles up to the surface of the water and forms a thin layer, which shields the coral like a natural, on-demand layer of sunscreen. With this protection, the water cools down and algae can return to the coral and reestablish their partnership unless the water is too hot, in which case the coral consumes the components that make up DMs before it can form.

Climate change is becoming too intense for coral and algae to naturally adapt fast enough. Therefore, scientists are testing out different ways to accelerate that adaptation through various methods of assisted evolution. Some teams are currently conducting small field trials of selective breeding, where they identify the most heat-tolerant members of a sample of corals. Then they breed them together to create offspring that can be used to help restore coral reefs. Others are focusing their efforts on speeding up the algae’s adaptation, attempting to increase its heat tolerance in labs.

Ultimately, scientists may implement a cocktail of solutions to save coral reefs. “To create a super-coral, we could, for example, selectively breed heat-tolerant corals and combine that with enhanced algae, ” says van Oppen.

1. What can we learn about Paragraph 2?
A.The algae release damaging substances when exposed to heat.
B.The coral eats the waste produced by the algae.
C.The algae is to the coral what trees are to humans.
D.The coral will die from harmful chemicals when it’s too hot.
2. When the water is too hot, natural evolution fails to help because _______.
A.DMS can’t be formedB.the sunscreen layer is destroyed
C.the coral consumes DMSD.the algae release too much DMS
3. How is Paragraph 4 mainly developed?
A.By analyzing causes.B.By making a comparison.
C.By presenting approaches.D.By describing a process.
4. What is the passage mainly about?
A.The role played by the algae within the coral.
B.The way to create a super-coral to save reefs.
C.Selective breeding conducted among corals.
D.Scientists’ efforts to increase algae’s heat tolerance.
2022-12-31更新 | 237次组卷
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【推荐3】On November 7, Lewis Pugh completed a one-kilometer swim in the freezing waters of King Edward Cove, off South Georgia in Antarctica. He was wearing only his swimming glasses, cap and Speedos!

Pugh is an advocate for our oceans and seas, working to protect these ecosystems with their large diversity of marine (海洋的) life. When asked why he doesn’t wear a wetsuit (防寒泳衣), Lewis says, “I ask world leaders to do everything they can to protect our oceans. Sometimes the steps they need to take are difficult and unpopular. If I’m asking them to be courageous, I must also be. Swimming in a wetsuit would not send the right message.”

It took Pugh about 19 minutes to complete the one-kilometer swim in Antarctica where the water averaged about 1. 6℃. He says that his body can only tolerate about 20 minutes in the freezing waters before it starts shutting down. As he swims, his body temperature steadily drops, which in turn causes his muscle control to drop, slowing him down. When he is done with his swim, his support team rushes him to a hot shower and it takes almost an hour for his body temperature to return to normal.

Doctors and Pugh caution that one must receive months of training to swim in such cold waters. Even expert swimmers who are unused to freezing water can drown within minutes because of the physical shock experienced by the body. Pugh says he trained for six months before this swim.

This is not the first time that Lewis has swum in dangerous conditions. In 2007, he swam one kilometer in the North Pole to draw attention to the melting Arctic ice due to climate change. In 2015, he swam in the Bay of Whales in Antarctica’s Ross Sea as part of his successful campaign to help set up a marine reserve there.

1. Why did Lewis Pugh swim without a wetsuit?
A.To swim faster.B.To show his bravery.
C.To build up his body.D.To win public attention.
2. What does the underlined word “it” in Paragraph 3 refer to?
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C.His body temperature.D.The water temperature.
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C.One should be ready to take on challenges.D.One must be used to long-distance swimming.
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