【推荐1】Where did the idea of “white bikes” come from? In the 1960s, a group of cycling fans came up with an idea. They believed that it would be better for everybody if cars weren’t allowed in the city centre and only bicycles were. They were hopeful that this would help to save energy, reduce pollution and provide free public transport. The group painted hundreds of bicycles white and placed them in many areas around Amsterdam for people to use. Anyone was allowed to take them and use them for short journeys. People would leave the bike in the place where they finished their journey, so that someone else could then take it and use it from there. Soon after, however, problems came up and the “white bikes” all disappeared — thieves stole them all in a matter of weeks!

Why did the group come up with the idea of “white bikes”?

A．To ensure traffic safety.	B．To reduce transport costs.
C．To encourage physical activity.	D．To promote green transport.

【推荐3】This month, Germany’s transport minister, Alexander Dobrindt, proposed the first set of rules for autonomous vehicles(自主驾驶车辆). They would define the driver’s role in such cars and govern how such cars perform in crashes where lives might be lost.

The proposal attempts to deal with what some call the “death valley” of autonomous vehicles: the grey area between semi-autonomous and fully driverless cars that could delay the driverless future.

Dobrindt wants three things: that a car always chooses property(财产) damage over personal injury; that it never distinguishes between humans based on age or race; and that if a human removes his or her hands from the driving wheel — to check email, say — the car’s maker is responsible if there is a crash.

“The change to the road traffic law will permit fully automatic driving,” says Dobrindt. It will put fully driverless cars on an equal legal footing to human drivers, he says.

Who is responsible for the operation of such vehicles is not clear among car makers, consumers and lawyers. “The liability(法律责任) issue is the biggest one of them all,” says Natasha Merat at the University of Leeds, UK.

An assumption behind UK insurance for driverless cars, introduces earlier this year, insists that a human “ be watchful and monitoring the road” at every moment.

But that is not what many people have in mind when thinking of driverless cars. “When you say ‘driverless cars’, people expect driverless cars.”Merat says. “You know — no driver.”

Because of the confusion, Merat thinks some car makers will wait until vehicles can be fully automated without operation.

Driverless cars may end up being a form of public transport rather than vehicles you own, says Ryan Calo at Stanford University, California. That is happening in the UK and Singapore, where government-provided driverless vehicles are being launched.

That would go down poorly in the US, however. “The idea that the government would take over driverless cars and treat them as a public good would get absolutely nowhere here,” says Calo.

The proposal put forward by Dobrindt aims to __________.

A．stop people from breaking traffic rules

B．help promote fully automatic driving

C．protect drivers of all ages and races

D．prevent serious property damage

【推荐1】Light pollution is a significant but overlooked driver of the rapid decline of insect populations, according to the most comprehensive review of the scientific evidence to date.

Artificial light at night can affect every aspect of insects' lives, the researchers said. "We strongly believe artificial light at night — in combination with habitat loss, chemical pollution.invasive (入侵的) species, and climate change — is driving insect declines, " the scientists concluded after assessing more than 150 studies.

Insect population collapses have been reported around the world, and the first global scientific review published in February, said widespread declines threatened to cause a "catastrophic collapse of nature's ecosystems".

There are thought to be millions of insect species, most still unknown to science, and about half are active at night. Those active in the day may also be disturbed by light at night when they are at rest.

The most familiar impact of light pollution is moths (飞蛾) flapping around a bulb, mistaking it for the moon. Some insects use the polarisation of light to find the water they need to breed, as light waves line up after reflecting from a smooth surface. But artificial light can scupper (使泡汤) this. Insects are important prey (猎物) for many species, but light pollution can tip the balance in favour of the predator if it traps insects around lights. Such increases in predation risk were likely to cause the rapid extinction of affected species, the researchers said.

The researchers said most human-caused threats to insects have analogues in nature, such as climate change and invasive species. But light pollution is particularly hard for insects to deal with.

However, unlike other drivers of decline, light pollution is relatively easy to prevent. Simply turning off lights that are not needed is the most obvious action, he said, while making lights motion-activated also cuts light pollution. Shading lights so only the area needed is lit up is important. It is the same with avoiding blue-white lights, which interfere with daily rhythms. LED lights also offer hope as they can be easily tuned to avoid harmful colours and flicker rates.

What is discussed in the passage?

A．Causes of declining insect populations.

B．Consequences of insect population collapses.

C．Light pollution: the key bringer of insect declines.

D．Insect declines: the driver of the collapsed ecosystem.

【推荐2】Live with roommates? Have friends and family around you? Chances are that if you’re looking to live a more sustainable lifestyle, not everyone around you will be ready to jump on that bandwagon.

I experienced this when I started switching to a zero-waste lifestyle five years ago, as I was living with my parents, and I continue to experience this with my husband, as he is not completely zero waste like me. I’ve learned a few things along the way though, which I hope you’ll find encouraging if you’re doing your best to figure out how you can make the change in a not-always-supportive household.

Zero waste was a radical lifestyle movement a few years back. I remember showing my parents a video of Bea Johnson, sharing how cool I thought it would be to buy groceries with jars, and have so little trash! A few days later, I came back with my first jars of zero waste groceries, and my dad commented on how silly it was for me to carry jars everywhere. It came off as a bit discouraging.

Yet as the months of reducing waste continued, I did what I could that was within my own reach. I had my own bedroom, so I worked on removing things I didn’t need. Since I had my own toiletries (洗漱用品), I was able to start personalizing my routine to be more sustainable. I also offered to cook every so often, so I portioned out a bit of the cupboard for my own zero waste groceries. Perhaps your household won’t entirely make the switch, but you may have some control over your own personal spaces to make the changes you desire.

As you make your lifestyle changes, you may find yourself wanting to speak up for yourself if others comment on what you’re doing, which can turn itself into a whole household debate. If you have individuals who are not on board, your words probably won’t do much and can often leave you feeling more discouraged.

So here is my advice: Lead by action.

1. What was the attitude of the author’s father toward buying groceries with jars?

A．He disapproved of it.	B．He was favorable to it.
C．He was tolerant of it.	D．He didn’t care about it.

2. What can we infer about the author?

A．She is quite good at cooking.	B．She respects others’ privacy.
C．She enjoys being a housewife.	D．She is a determined person.

【推荐3】California has lost half its big trees since the 1930s, according to a study to be published Tuesday and climate change seems to be a major factor (因素).

The number of trees larger than two feet across has declined by 50 percent on more than 46, 000 square miles of California forests, the new study finds. No area was spared or unaffected, from the foggy northern coast to the Sierra Nevada Mountains to the San Gabriels above Los Angeles. In the Sierra high country, the number of big trees has fallen by more than 55 percent; in parts of southern California the decline was nearly 75 percent.

Many factors contributed to the decline, said Patrick McIntyre, an ecologist who was the lead author of the study. Woodcutters targeted big trees. Housing development pushed into the woods. Aggressive wildfire control has left California forests crowded with small trees that compete with big trees for resources (资源).

But in comparing a study of California forests done in the 1920s and 1930s with another one between 2001 and 2010, McIntyre and his colleagues documented a widespread death of big trees that was evident even in wildlands protected from woodcutting or development.

The loss of big trees was greatest in areas where trees had suffered the greatest water shortage. The researchers figured out water stress with a computer model that calculated how much water trees were getting in comparison with how much they needed, taking into account such things as rainfall, air temperature, dampness of soil, and the timing of snowmelt (融雪).

Since the 1930s, McIntyre said, the biggest factors driving up water stress in the state have been rising temperatures, which cause trees to lose more water to the air, and earlier snowmelt, which reduces the water supply available to trees during the dry season.

What is the second paragraph mainly about?

A．The seriousness of big-tree loss in California.

B．The increasing variety of California big trees.

C．The distribution of big trees in California forests.

D．The influence of farming on big trees in California.

【推荐1】Experienced climbers of Mount Qomolangma are wondering if new proposed rules will solve the root causes of various deadly accident on the world’s tallest mountain. The proposals, if approved by the government of Nepal, would add steps to the permitting process for mountaineers as well as limitation to tourism companies to prevent the disaster in last May happening again.

Traditionally, Nepal has given climbing permits to anyone prepared to pay a fee of $11, 000. In 2019, the government approved a record high of 381 permits. With essential Sherpas and guides added, more than 800 people were trying to reach the peak during the short weather window. The overcrowding led to deadly delays in what is known as the “death zone”, the area above 8, 000 meters, and the death of eleven climbers eventually, many of them dying in late May after they were stuck there. It also raised suspicions that guide companies were urging inexperienced or incompetent mountaineers to attempt the climb.

To reduce the potential risks, among the suggested changes is a rule for those who want to climb the Mount to have a qualified doctor prepare a report on their medical history and general health. Another is that climbers provide evidence they have climbed another tall mountain in Nepal. They will also need to be accompanied by a trained Nepalese guide.

American mountaineer Ed Viesturs said the proposed changes will likely limit the amount of climbers able to plan journeys up the Mount, yet will not do enough to stop the “group think” mentality that led to the traffic jam in late May. He said climb leaders at base camp also needed to consider how to fix the problem. “I know several climbers who waited until later and had the mountain almost to themselves,” Viesturs said of the 2019 climbing season. “We really need to answer why so many people are there on the same day? How can you control it?”

What is the purpose of the new proposals?

A．To attract more mountaineers.

B．To issue security warnings of the climb.

C．To guide inexperienced climbers.

D．To avoid death on Mount Qomolangma.

【推荐2】A rare 765-year-old gold coin found on farm land in Devon in south-west England is expected to sell for up to half a million pounds at auction. It is believed that the coin was made more than 750 years ago, during the rule of the English King Henry III. It is one of only eight known to exist.

Featuring a picture of King Henry III on one side and a cross and roses on the other, the coin is around 2.5 centimetres across. It was made with gold that came from north Africa. It was found in September last year by a detectorist (someone who looks for items buried underground using a metal detector) in Hemyock village. The detectorist had no idea how rare the coin was until he posted a photo of it on social media, where it was spotted by a history expert.

The finder, who doesn’t want to be named, was told to take the coin to the British Museum, where it was confirmed that the coin was very rare. According to the law, the finder is allowed to keep it because it’s a single coin and not part of a bigger haul but he has decided to sell it. He told the BBC, “The coin was found in an unappealing field and could quite easily have never been recovered. Now it is protected for future generations to enjoy.”

The coin is especially valuable because it was one of England’s first gold coins. The country’s coins were made of silver until King Henry III, who ruled from 1216 until his death in 1272, introduced gold ones with his picture on them.

Professor David Carpenter at King’s College London, has traced the coin back to a man called John de Hidon, who was the lord of Hemyock Manor. Carpenter thinks the coin may have fallen out of someone’s pocket—either de Hidon himself or one of his staff.

The correct order of the events that happened is____________.
①The value of the coin was confirmed.
②A coin was unearthed in the field.
③The coin was on display at the British Museum.
④The coin was intended for sale.
⑤The coin caught the attention of a history expert.

A．①③②④	B．②⑤①④
C．②①⑤④③	D．④②①③⑤

【推荐1】Victor Frankl, the author of Mans Search for Meaning, once wrote, "'Everything can be taken from a person but one thing: the last of human freedoms-to choose one's attitude in any given set of circumstances. " Frankl was right. Attitude is a choice. You could be faced with a thousand problems, many or most over which you have absolutely no control. However, there is always one thing you are in complete and absolute control of and that is your own attitude.

To be honest, it wasn't until I was in my late 20s that I finally understood its full impact. All through my teens and into my early adult life, I can't tell you the number of times that I heard, "Bob, if you'd just change your attitude, you would do a lot better" At that time, I didn't know what attitude was, let alone know how to change it!

Attitude and results are inseparable. They follow one another as night follows day. One is the cause, while the other, the result. There is a term we use to distinguish this “cause and effect” relationship, which is called The Law of Cause and Effect. Simply stated, if you think in negative terms, you will get negative results; if you think in positive terms, you will achieve positive results. Some people always see wrong things in the world. These individuals are quick to blame circumstances or other people for their problems, rather than accepting responsibility for their life and their attitude. Thus, it would appear as if they were born with bad luck and it has followed them around their whole life. However, there are others who are forever winning and living the good life. They are the real movers and shakers who make things happen. They seem to go from one major accomplishment to another. They're in control of their life. Their wins are a matter of choice.

You can experience that kind of life as well, you only need to decide. Dorothea Brand once said, "Act as if it were impossible to fail, " and I challenge you to do so. By simply becoming aware that you can choose your thoughts each and every day, you will change your entire outlook. You have the power to choose an abundant life no matter what your circumstances are. Don't wait to experience all the wonderful things the universe has in store for you. Start today by working on your attitude and welcome the abundant life that you are meant to lead.

What is the writer's message conveyed in this passage?

A．Winning is a matter of control.	B．Success begins with positive attitude.
C．Bad attitude results in bad results.	D．Attitude and results are inseparable.

【推荐3】What is life? Like most great questions, this one is easy to ask but difficult to answer. The reason is simple: we know of just one type of life and it’s challenging to do science with a sample size of one. The field of artificial life-called ALife for short — is the systematic attempt to spell out life’s fundamental principles. Many of these practitioners, so-called ALifers, think that somehow making life is the surest way to really understand what life is.

So far no one has convincingly made artificial life. This track record makes ALife a ripe target for criticism, such as declarations of the field’s doubtful scientific value. Alan Smith, a complexity scientist, is tired of such complaints. Asking about “the point” of ALife might be, well, missing the point entirely, he says. “The existence of a living system is not about the use of anything.” Alan says. “Some people ask me, ‘So what’s the worth of artificial life?’ Do you ever think, ‘What is the worth of your grandmother?’”

As much as many ALifers hate emphasizing their research’s applications, the attempts to create artificial life could have practical payoffs. Artificial intelligence may be considered ALife’s cousin in that researchers in both fields are enamored by a concept called open-ended evolution (演化). This is the capacity for a system to create essentially endless complexity, to be a sort of “novelty generator”. The only system known to exhibit this is Earth’s biosphere. If the field of ALife manages to reproduce life’s endless “creativity” in some virtual model, those same principles could give rise to truly inventive machines.

Compared with the developments of Al, advances in ALife are harder to recognize. One reason is that ALife is a field in which the central concept — life itself — is undefined. The lack of agreement among ALifers doesn’t help either. The result is a diverse line of projects that each advance along their unique paths. For better or worse, ALife mirrors the very subject it studies. Its muddled (混乱的) progression is a striking parallel (平行线) to the evolutionary struggles that have shaped Earth biosphere.

Undefined and uncontrolled, ALife drives its followers to repurpose old ideas and generated novelty. It may be, of course, that these characteristics aren’t in any way surprising or singular. They may apply universally to all acts of evolution. Ultimately ALife may be nothing special. But even this dismissal suggests something：perhaps, just like life itself throughout the universe, the rise of ALife will prove unavoidable.

What can we learn from this passage?

A．ALife holds the key to human future.

B．ALife and AI share a common feature.

C．AI mirrors the developments of ALife.

D．AI speeds up the process of human evolution.